Cancerous Lesions -- Lesson 256

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In this post we will learn about Cancerous Lesions:
1. Basal cell carcinoma: - The basal cell layer of the epidermis consists malignant tumor. This is the most frequent type of skin cancer. It is a slow-growing tumor that usually occurs on the upper half of the face, near the nose. This almost never metastasizes.

2. Kaposi’s sarcoma: - Usually on the lower extremities, malignant, vascular, neoplastic growth characterized by cutaneous nodules. Nodules range in color from deep pink to dark blue and also to purple. The acquired immunodeficiency syndrome also known as AIDS is the condition which is also associated.

3. Malignant melanoma: - The melanocytes which are contained in cancerous growth. This malignancy is attributed to the intense exposure to sunlight that many people experience. With not regular borders, melanoma usually begins as a mottled, light brown to black, flat macule. The lesions which may turn shades of red, blue, and white and may crust on the surface and bleed. In the preexisting moles or dysplastic nevi melanomas often arise and frequently appear on the lower legs, neck, upper back, and head.

Biopsy is required to diagnose melanoma, and prognosis following excision is determined through the skin layers. On this basis melanomas have been classified levels. The growth is confined to the epidermis and subcutaneous layer. Melanomas often metastasize to the lung, liver, and brain. For this treatment includes excision of the tumor, regional lymphdenectomy, radiotherapy or chemotherapy/immunotherapy to prevent metastasis.

4. Squamous cell carcinoma: - The squamous epithelial cells of the epidermis consists malignant tumor. This tumor may grow other than the skin, wherever squamous epithelium is found (mouth, larynx, bladder, esophagus and so forth). It may arise from actinic or sun-related, keratoses and metastasize to lymph nodes. The treatment for this is surgical excision or radiotherapy.

In the next post we shall come through laboratory tests, clinical procedures and abbreviations.

To go to the previous post from here, please click the link below

http://learn-free-medical-transcription.blogspot.com/2011/07/skin-neoplasms-benign-neoplasms-lesson.html

To go to the first post from here, please click the link below

http://learn-free-medical-transcription.blogspot.com/2008/12/lesson-7-why-there-are-differences.html

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