June 30th, 2010 | Tags: , ,

Squamous Cell Carcinoma

Squamous cell carcinoma (SCC) or carcinoma.

Squamous cell carcinoma is a type of cancer subtypes and may originate from many organs. A few of such organs, skin, lungs, lips, mouth, bladder, vagina, cervix (cervical), and samples can be increased. Skin cancer, basal cell carcinoma in the this is one of the most common skin cancer. Forming the top layer of the epidermis of the skin comes from squamous cells.

Squamous cell cancer of the mucous membranes throughout the body style of the cover is seen most commonly occurs in sun-exposed parts. Squamous cell carcinoma usually stayed for a while although the epidermis was not treated in time to penetrate the underlying tissue layers. A small percentage of cases metastasize to distant tissues and organs.

Squamous cell carcinomas can be fatal when it happens. The most common mucous membranes, lips and chronic skin infections common in developing squamous cell carcinoma metastasis in places they do. The second most common type of skin cancer is common (10-15%). Chronic (10-20 years) applies for exposure to sunlight. Around the equator as the relative incidence is increasing. Squamous cell cancer more common in men. BCC is the common risk factors in general. Usually erythematous skin, ulcers, crusted lesions are seen in the form. Squamous base often, soft, friable lesions are prone to bleeding with minimal trauma and can be.

Edges of the skin lesion and surrounding tissue makes a high inflammatory response enduration create. Persistent ulceration areas, where previous trauma, burns or old scars (Marjolin’s ulcer) may develop on the tumor. Basal cell or neoplastic changes in a chronic ulcer may result in SCC can be associated with poor prognosis and high mortality. Multifocal superficial actinic skin lesions can arise. Scaly-skinned, and they usually accompanies a patch with minimal trauma Bleed. Diagnosis and evaluation of the lesion may be difficult and may require multiple biopsies. SCC rarely a nodular, as can be seen in eksofitik lesions.

Initially, the components that are growing and ulcerative. And growth of these lesions can occur suddenly. Histopathologic analysis of a few characters are more important in SCC. Irregular masses of epidermal cells, proliferating downwards and will be invading dermis. Will be differentiated depending on the presence of tumor keratinization. 1 to 4 tumors can be classified using Broders classification. SCC behavior of de novo lesions are more aggressive and high metastatic potential. At least 8% has been reported to develop regional and distant metastases.

Squamous Cell Carcinoma (SCC) with Here are the pictures Reasons : Chronic exposure to sunlight as the cause of many cases represents. The disease is so common as the body’s face, neck, bald head skin, hands, shoulders, arms and back like the sun that occures.Ear bucket edge and bottom lip, this type of cancer against the most defenseless body parts constitute. Squamous cell carcinoma of the skin than previously yandigi and scar tissue developed parts, the long-term non-healing wounds,previously X-rays or arsenic, and petroleum-derived chemicals, such as the exposed parts can be developed.

Furthermore, in addition to chronic skin infections and immune system diseases or squamous cell carcinoma of the long period of  considered among the reasons. In most cases of squamous cell carcinomas, healthy-looking skin suddenly occures.Some of predisposition to develop this form of cancer, researchers believe may have inherited.

Risk Group: Long periods exposed to the sun in all aspects of this disease are at risk. But fair-skinned, light-haired, blue, green or gray eyes of the people with the highest risk group constituted. Working in professions that require long hours outdoors or enjoy the sun rays for long periods of exposed people are at particular risk. Africans have dark skin, light-skinned individuals than in skin cancer is less.

Squamous cell carcinomas than two-thirds majority or a pre-existing skin inflammation that may have developed the old burn injuries. Treatment: The first preferred form of treatment a complete surgical excision. Radiation in some cases, surgery can not be done.Therapy can be applied instead of excision. Often the lower lip and oral mucosa of smokers seen SCC’si is more aggressive and require more radical treatment. In cases of prolonged sun exposure, and common in patients on immunosuppressive therapy (organ transplants, etc.) has a high recurrence rate and treatment need not be as satisfactory as well.

Regional lymph nodes, ultrasound can be used in aggressive and advanced cases, it is not Indicative of a blood test. Follows: Most recommended form of follow-up control after three months at the end of this year and then double-check the type of SCC, treatment modalities, depending on the needs of patients and controls is done. No benefit was reported that a blood test or X-rays are not available. More details can be found in current national guidelines.

Lips, tongue, floor of mouth, salivary glands, inside the cheeks, gums and palate affects malignant tumors. Tumors 90% are squamous cell carcinoma and the rest of lymphoma, melanoma, minor salivary gland cancer and sarcoma. Systems affected: digestive sistemil Genetics:

Irrelevant

Tightness appears:

• 12 / 100 000 (30 300 new cases each year). 5000 people die each year from this disease

• Tumors of the oral cavity of all cancers in men, 4% ‘fame, women 2% CPC will bring

• Palm fresh palm leaves, chewing habits, smoking habits as well to keep the end in the mouth, depending  is high in Asia.

Age :

• 50 and over. But with the use of smokeless tobacco are increased in the younger age group.

Gender:

• Men = Women

SPECIFICATION AND RESULTS

• Dysphagia

• Socket to come back from the nose.

• Speech problems.

• Lack of tumor-related nasopharyngeal airway and sore throat to swallow many of the weather.

• Reflection due to the pain of unilateral ear pain.

• Often confused with precision and infectious masses or ulcers in the oral cavity. Manual examination of the ulcer often extends beyond their own borders is felt in the hard areas.

• Soft neck mass.

• The lymph glands in the neck by hand.

REASONS

• Tobacco use (smoky or smoke-free).

• The use of snuff.

• Excessive alcohol consumption.

•In the case of lip cancer, exposure to ultraviolet light.

• Vitamin B12 or iron deficiency anemia.

DIAGNOSIS :

IMAGING

• Jumping into the lung to the chest radiograph to rule out.

• Thinking of jumping to the bone if the bone pain and bone scan image.

• Suggestive of brain or liver clinic if there is a jump from computed tomography or MRI.

Biopsy

• Outpatient transoral biopsy, the diagnosis is accurate.

TREATMENT

GOOD SANITARY MAINTENANCE

• The patient paying for surgery.

• Treatment varies depending on location, for example, tongue, cheek wall, pharynx, palate, lips.

• Radiation (We-ray) treatment and / or (drug) in combination with chemotherapy or only the cancerous area is removed completely by surgery is the treatment of choice.

• Lesions that can not be operative radiation therapy and / or are treated with chemotherapy.

• Surgical patients who require nutrition is the most important factor for normal wound healing. If oral feeding is not possible probe inserted into the stomach and / or gastric feeding may be required by drilling holes from the outside.

ACTIVITIES

• Physical condition of the patient can tolerate up.

DIET

• The extent of the disease depends on the ability and chewing or swallowing.

Plugging

PATIENT MONITORING

• Upper airway and digestive systems, or recurrence of a possible focus for the routine examination of the head and neck examination should be performed periodically.

PRECAUTIONS / avoidance

• Prohibiting tobacco smoking or using smokeless tobacco.

• Prohibiting alcohol.

EXPECTED DEVELOPMENT AND PROGNOSIS

Adequate treatment of early lesions, 80% more than the treatment provided.

Over the years, the growing incidence, treatment and skin cancer which is more difficult to control. Risk factors are as previously stated. Patients with skin cancer before the first 18 months of 25% chance of recurrence, 36% increase over five years. HPV (human papillomavirus) infection and increases the risk of squamous cell carcinoma.

Floor consisting of cancers (Marjolin ulcer) is a special place. Was first described in 1828. Burns or trauma, long-lasting bearing on the tension grows. Burns nearly 1015 years after the formation occurs. The most aggressive skin cancer. Metastasis rate is 20%. For treatment of a wide excision and regional lymph node dissection if nodal involvement is required. Radiotherapy may be added. 5-year survival rates are up 34%.Sinus or leg ulcers are a significant risk factor for cancer. Metastases, would be too late to remote areas, regional ganglions can spread early.

Malignant Melanoma (Melanoma, M.M.)

Melanoma, melanin pigments can produce any cell of the body are caused by malignant tumors. Therefore, is seen most often in the skin. In recent years, the recognition of the etiologic factors, clinical and pathological features of diversity is known to elicit the rational treatment was developed.

Malignant melanoma (MM) is a common tumor. In the last 35 years, the incidence rate of up to 4/100.000 twice increased. Therefore, prevention, early diagnosis, early surgical intervention and follow-up is crucial to survival. The incidence increases proportionally with age. Between 35 and 55 years are common. Etiologic factors, a previous nevi, nevi emerging, trauma, solar radiation, chronic irritation-s, racial predisposition is located.

Dysplastic nevi also carries a potential tumor. Giant hairy nevi and malignant melanoma can develop at a rate of 80-10%. Therefore, these lesions should be excised from forming tumors. Trauma, foot base is very significant, especially in black skin occurs. Ultraviolet rays from the white primary factor initiating be called melanoma. Extremity melanomas in women tend to remain localized. Also become less ulcers.

Clinically as senile keratosis, basal cell carcinoma, vvart’lar, Kaposi’s sarcoma, pyogenic granuloma, dermatofibromlar be confused with malignant melanoma. Common nevi size, color, ulcers, bleeding and itching are the signs of malignant change.

Lentigo malignant melanoma: common in the elderly, sun-exposed areas, consisting of clinical lesions, such as the map is up to the year. Aggressiveness as a minimum M.M. type (Hutchinson’s Freckle). Survival rate is 60%. Superficial spreading melanoma. The most common type. A pigmented lesion is usually in the ground (intradermal nevus). Nodular structure can be earned over time, become ulcerated.

Nodular malignant melanoma: the body could be anywhere. Nodular structures are easily recognizable due. There is rapid clinical course. All M.M. of up to 10% will generate. The prognosis is poor. Survival is usually around 30%.

Acral Lentigo Malignant Melanoma: palmar, plantar, subungual is located. Lentigo M.M. There are clinical features, such as. Minimal effect of sunlight is seen on the ground. Survival time, the depth is up to 100% for less than 0.76 mm. 0.76 to 1.5 mm. Those with a depth of between 91% survival time is up. Depth of 1.5 mm from the five year survival was 37% in the show.

Two major issues in the surgical treatment of primary cutaneous MCC’s are. First, how to treat neoplasms of the origin, second, the regional lymph node clear when and how. The granting of this decision has helped the depth of the tumor.

Histopathological studies of origin away from the epidermis Clark MCC with invasion depth of the relationship between the presence of potential spill shown. Accordingly M.M. It is divided into five levels.

Level 1:  In situ atypical epidermis melanocytes.
Level 2:  Melanocytes were extending papillaya.
Level 3:  Papillerretiküler have come up between the layers.
Level 4:  Reticular dermis and melanocytes reached.
Level 5:  Subcutaneous fat tissue was atypical melanocytes.

Breslow and neoplasms of the epidermis from the granular zone of the base of the hill until the distance was measured by ocular micrometer. Fi-level 0.76 mm. has been determined as 10-year period and 95% respectively. Level V is 4 mm thick and 5-year survival for lesions less than 50% is expected.

Systematic scan of the chest radiograph and liver function tests starts with. In addition, tomography, scanning (per region), when necessary, chest, abdomen, pelvis should also be assessed.

MM’un primary excision, the treatment is the most important first step. MM’lu in various thicknesses according to data related to patients, less than 1 mm in depth to be excised only in those local been shown to be very low.

VVHO’s M.M. programs of the lesions according to lesion thickness, 2 mm outside the margin of 1-3 cm of intact tissue, lesions <1 mm in the form of lcm’lik sufficient margin. According to the center of some of the series, 1-4 mm lesions in the extremities and trunk with 2-4 cm margin is sufficient interest. Local recurrence in these applications or intransit metastases (lesions created in the region between the border and the regional node metastases) were not significant differences in the rate. 1. Insitu M.M. to 0.5cm. ensure full ablation margin. 2. Less than 1 mm in depth of the lesion is larger lcm’den primary closure can be removed with no record is appropriate. 3. Medium lesions (1.0-4.0 mm), 2-cm margin is appropriate limit. 4. Thick lesions (> 4 mm), slightly wider margin for the 2cm is achieved by removing local control.

The risk of regional lymph mikrometastazla eclipse thin tumors (<1.0mm)> 4.0 mm) lesions is very high. Thick lesions, systemic retention rate is high.VVHO’nun a wide range, only in those large primary tumor excision, wide excision and elective lymph node dissection revealed no significant difference in those. Clinically there (+) node is kept separate ones.

Lymph nodes in clinical pathology were observed, with the thick ones in the MM medium sentinel lymph node dissection before being made in the case of elective (sentinel) lymph nodes to see if and only if it micrometastasis or metastasis biopsy is done to clean that area is one of the new approach. These nodes are used when determining probdan lenfosintigrafiden and gamma. Ganglion is removed and examined with immunohistochemical dye is called micrometastases. If patients are only followed if the biopsy was negative.

If the general approach, as summarized again, the primary lesion or equal to 1 mm deeper than those with only a wide excision and lymph node is examined. Sentinel for head and neck region (sentinel) node may not be appropriate to search.

Squamouscellcancer.org

June 14th, 2010 | Tags:

Squamous Cancer

This type of cancer most commonly vulva, vagina and cervix can be seen.

Squamous cell carcinoma is usually slow growing and responds well to treatment is a type of cancer. This type of cancer is usually diagnosed when patients are women over 50 years.

Squamous cell carcinoma of the researchers working in various fields is a topic of interest, cytological, histological and molecular aspects are examined. Squamous cell carcinoma in terms of the molecular approach will clarify here.

Results :

Studies on p53

p53 tumor suppressor again , 17 has been localized on the short arm of chromosome. The protein product of p53 in normal DNA linking specific regions and will assume the role of fixing limits cellular proliferation, expression of other (expressed availability) can be arranged. As this was the opposite, in experimental models, loss of function in the cell p53, are easier to malignant transformation. Loss of p53 often result in a mutant allele occurs. This mutation is not connected anymore DNA resulting in inactive protein products. Alleles remaining in the presence of normal p53, mutant p53 protein inactive complex with the normal p53 gene may occur.

P53en ultimately deprived cells are functional in an efficient manner. In addition, one allele of p53 gene mutations in exposed to cancer, often there is no other allele. This partial or complete loss of the short arm 17 chromosome is about.

Overexpression of p53 protein, p53 gene mutations that result, carcinomas, including hematologic malignancies are found in a wide range of cancers.

P53n role in human cervical cancer in many studies has been investigated. HPV-negative cervical carcinoma cells, p53 mutation has been seen on the borders, but not seen in HPV-positive cell boundaries. p53 protein overexpression rare primary cervical, vulvar and vaginal cancer causes, but a direct opposite of the respiratory-digestive tract squamous cell carcinoma more frequently makes cause.

P53 the relationship between molecular abnormalities and neoplasia by many researchers has been investigated in detail, some p53 abnormalities in human cancer is known to cause chromosomal changes showed strong evidence. Chromosomal changes, in situ hybridization directly lorescence (FISH) can be monitored. However, p53 overexpression can be investigated with immunohistochemistry. p53 with apoptotic cell death and allows the stopping of development.

HPV-16 and HPV-E6 protein binds p53 different affinities. This has been shown in vitro that the HPV E6, you can create a complex with p53. Human cervical carcinoma cells, the hypothesis that inactivation of p53 protein on the borders (with mutations or by forming a complex with E6) support.

P53 protein in normal cells and tissues has a short half-life and can not be monitored by immunohistochemistry. As this was the opposite, fixed or mutant p53 protein was inactivated by a half-life is prolonged and can be monitored by immunohistochemistry followed.

Chromosomal aneuploidy in tissue samples can be monitored. Using chromosome-specific probes in paraffin-embedded tissue samples underwent interphase cytogenetic analysis of chromosomal loss shows. In this method of testing for cervical cancer, all patients studied showed chromosome losses or gains. In the cases of chromosomal gain, 17 seen chromosome trisomy and tetrazomilere.

P53 mutations in non-familial cancers are among the most common genetic abnormalities. p53 overexpression is associated with vulval carcinomas proteins 81% to 40%, although it is caused by loss of p53 mutations in meaning, these carcinomas are 30nda% to 20%, and most of these cases are not related to HPV. As a result of these observations p53n by HPV and other mechanisms in neoplastic vulval carcinoma is thought to be responsible. Prognostic value of p53 mutations in these tumors are also universally recognized.

PRb-related activities

Tumor cell proliferation, cell cycle checkpoint between G1 and S phase is caused by the lack of control. At this stage, such as p53 and pRb proteins or functional abnormalities in the absence of the tumor is allowed to proceed.

pRb, p53 is a tumor suppressor gene has been localized and 13q14e. Between G1-S phase cell cycle checkpoint has an important task.

18eki HPV-E7, like E1A protein or SV40aki adeno viruses T-antigen, phosphorylation G1en throughout S phase transition (the uncontrolled proliferation of cells) can be inactivated by allowing pRbi.

Genetic variation in the gene expression of Rb protein, cause loss of pRb, indicating that carcinomas can be viewed immunohistochemistry methods.

Lack of pRb expression in various histological specimens are found in tumors and tumor stage or not a correlation between the length of stay indicated.

Gain and Loss of Heterozygous

Heterozygous loss of malignancies is a common molecular events, but recently vulval intraepithelial neoplasia and vulval squamous cell in a small number of cancer were studied. Vulval intraepithelial neoplasia, vulval squamous cell carcinoma is considered as a premalignant phase.

Vulval vulval intraepithelial neoplasia and squamous cell carcinoma HPV in thought to be dependent, but in this case vulval intraepithelial neoplasia and squamous cell carcinomas do not come vulval not common. HPV-positive and HPV-negative vulval vulval squamous cell carcinoma and squamous cell carcinoma was investigated in case of loss of heterozygosity. For this, PCR (polymerase chain reaction) and electrophoresis was applied.

Vulval squamous cell carcinoma associated with vulval intraepithelial neoplasias vulval intraepithelial neoplasms fractional regional allele loss is higher than normal.HPV-positive vulval squamous cell carcinoma Loss of heterozygosity than HPV-negative vulval squamous cell carcinoma is more common. This information caused by heterozygous loss of vulval intraepithelial neoplasias shows genetic instability may increase the risk of invasion. In addition to HPV-positive and HPV-negative molecular events vary, and 3p25, a tumor suppressor gene in HPV-dependent vulval carcinoma gene occures an area.

Squamous cell carcinoma of the cervix and upper genital area of research in the genetic analysis of clonal neoplastic process, the more different results, a study has found. PCR and electrophoresis were used in this study. Genetic analysis has shown that a single clonal process here for the tumors are heterozygous loss. Heterozygous loss of this most commonly occurs in areas 6p and 6q, 11p and 11q in the region followed by them. These tumors originated from the cervix and upper genital area, this type of tumor expansion is brought about by combination of a single genetic change can be argued that a is about.

Deletions intratumoral heterogeneity of chromosome 3p in another study and X-chromosome inactivation in cervical cancer, cervical cancer, the role of 3p deletions and will be analyzed to understand the clonal origin. In this study, cervical cancer, is found as a frequent deletions 3PE 3pter-p24.2, 3p24.2-p21.1, and 3p12.1-3p21.2-p14.2 in a region of chromosome inactivation analysis for the human androgen.X receptor gene was used as marker. All lesions, non-random X inactivation shows an example.

Vulval squamous cell carcinoma and 3p, 8p, 10p, 11p, 17p, 5q, 10q, 15q, 22q, 2q, 8q, 11q, 21q loss of heterozygosity was observed at high frequency in the region. However, the incidence of loss of heterozygosity at 5q and 10p exceptions and observed an association between HPV. Heterozygous vulval squamous cell carcinoma of the loss of 3p and cervical squamous cell carcinoma are frequently observed at the two together. However, 5q, 8q, 17p, 21q, and some parts 22qu including vulval squamous cell carcinoma of allelic loss is much more common.

Vulval squamous cell carcinoma, loss of certain chromosomal arms with high prevalence of HPV in the heterozygous state without considering the large exhibits allelic loss. This shows that despite differences in pathogenesis of HPV-positive and HPV-negative vulval squamous cell carcinoma and genetic types in terms of loss of genetic evolution throughout participating some resemblance.

Chromosome 17 anozomilerinde cancer and skin lesions, with 48nde% of patients were studied. High degree of genetic instability (aneuploidy) vulval carcinomas way.

28th microsatellite markers with detailed analysis of cervical carcinoma 6.kromozom the short (6p25, 6p22, 6p21.3) and long (6q14, 6q16-21, 6q23-24, 6q25, 6q27) arms of some locuses high-frequency allelic deletion was found shows. Mikrodissected dysplasia and cervical carcinoma samples in studies of HLA class 1-3 gene (6p22-21.3) showed deletions and subtelomeric locus 6p25 allellik dysplasia is found in more samples 4%. Dysplasia on the long arm of chromosome 6 2% not more allelic deletions.

One of the methods used in molecular studies hybridization comparative genomics. The primary invasive vulvar squamous cell using this method of genetic diversity was investigated in carcinoma. 80nde% of patients in this study were chromosomal losses. 4p13-pter chromosomal aberrations and losses, and less frequently seen in 5qur 3p and loss of chromosomal 6q, 11q and 13q are in the region. 3Q earnings, and the most common chromosomal regions 8q, less frequently seen in chromosome 9p gains, 14, are 17ve 20q region.Hybridization comparative genomic chromosomal imbalances shown in vulval cancer, although there are regional differences in cervical cancer has been shown in a similar way. These results vulval and cervical carcinomas and squamous carcinomas may be a common genetic background could be due to the similarities.

Distal phalanx metastasis in operated bronchial carcinoma

Our clinic, back, waist and left knee pain caused by the applicant 54 years old male patient’s previous history of four months ago, squamous cell lung carcinoma with left pneumonectomy operation.Examination of left knee swelling and heat with the right hand fourth finger distal phalanx soft tissue obvious swelling and redness was detected. Microscopic evidence of metastasis suspected materials as metastatic squamous cell carcinoma of bone metastases in cancer.But common sin of all cases 0.2% seen in the hands of bronchial carcinoma metastasis.Cancer was presented with a rare cause of metastatic localization.

Important Results : Squamous cell lung carcinoma metastatic to bone, distal phalanx metastasis.

Bone and lung cancer the most common metastatic disease area.Bronchi carcinoma of the autopsy studies% 20-33 cases skeletal disease in the bone.Although hands and feet, small bones metastasis is rare.Hand and foot bones, the most common metastasizing primary tumors, lung (47%), kidney (12.5%) and breast (11%) The most common metastatic tumors in the bronchial carcinoma is hand tumors.Phalanx bone metastasis is the most common terminal phalanx.

Case Report

Four months ago, squamous cell lung carcinoma with left pneumonectomy underwent 54 years old male patient is a month of back and waist and left knee pain due.Curriculum vitae 45 years, smoking outside a property and there was no other problem.Physics examination, dyspnea and tachypnea of the patient into hemitoraksında respiratory.Left volume swelling in the knee with right hand fourth finger temperature increase and the distal phalanx redness swelling and tenderness.Lung radiograph of left hemithorax volume loss seen with mediastinal shift to the left.

Laboratory investigation: Hb: 11.7 g / dl, Hct: 36% Ca: 14.0 mg / dl, ALP: 260 U / L and lactam dehidtogenaz (LDH) 1036 U / L .Bone pain because of the drawn bone scintigraphy in the left knee had significant activity increase in the left hip joint, around the right ischial bone focal activity focuses on the left femur distal portion of left  proximal segment of the left acetabulum posterioru and right ischial bone T4-T7 vertebrae focal osteoblastic activity increased in both hemithorax ribs multiple focal activity increased.Right hand fourth finger radiograph the incisional biopsy taken from the distal phalanx.There was metastatic squamous cell carcinoma lesions as a single dose of degree.Thoracic vertebral metastases due to lung squamous cell carcinoma .Patient fraksivone 500 cGv radiotherapy because of a rare localization of metastases were present.