melanoma: see skin cancer skin cancer, malignant tumor of the skin. The most common types of skin cancer are basal cell carcinoma, squamous cell carcinoma, and melanoma. Rarer forms include mycosis fungoides (a type of lymphoma) and Kaposi's sarcoma.
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melanoma

Dark-coloured malignant tumour of skin cells that produce the protective skin-darkening pigment melanin. Melanomas are prone to metastasize (see cancer) and are associated with the highest death rate of any skin cancer. Removal, together with a collar of surrounding healthy skin, cures melanoma if done early. A common cause of melanoma is skin damage from sunlight. It is very rare in persons with dark skin.

melanoma

Pathol a malignant tumour composed of melanocytes, occurring esp in the skin, often as a result of excessive exposure to sunlight

melanoma [mel·ə′nō·mə]

(medicine)

A malignant tumor composed of anaplastic melanocytes.

A benign or malignant tumor composed of melanocytes.

Melanoma

melanoblastoma; a malignant tumor that consists of melanin-producing cells.

Factors conducive to the development of melanomas include injury and hormonal stimulation, especially during puberty. Melanomas generally occur on the skin; less often, they appear on the retina, pia mater, nasopharynx, larynx, esophagus, and mucosa of the intestine and other organs. Melanomas usually develop at the site of pigmented or depigmented birthmarks, but they may also appear elsewhere. The process starts with a barely perceptible, painless tumor on the skin, sometimes resembling a wart, which gradually becomes dark brown or black. Occasionally, it ulcerates and bleeds. In case of injury, the tumor may enlarge quickly and become tuberous, dense at the base, and stiffer. The regional lymph nodes enlarge. The initial signs that a melanoma is developing at the site of a birthmark are the birthmark’s enlargement, an intensification or reduction in its pigmentation, and the appearance of a red rim around it. Treatment involves prompt surgical intervention, based on early diagnosis, and the use of radiotherapy and drugs to retard the growth and reproduction of the cells.

I. IA. SHAKHTMEISTER

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benign granuloma of thyroid
Benign growth
Benign growth
Benign growth
benign headache
Benign Hereditary Chorea
benign hyperkeratosis
benign hyperkeratosis
benign hyperkeratosis
Benign Hypermobility Joint Syndrome
Benign Hyperplastic Prostate Tissue
benign hypertension
Benign Hypertrophy of Prostate
Benign Idiopathic Macro-Orchidism
Benign Infantile Myoclonic Epilepsy
benign inoculation lymphoreticulosis
Benign Intracranial Hypertension
Benign Intracranial Hypertension
Benign Joint Hypermobility Syndrome
benign juvenile melanoma
benign lymphadenopathy
Benign Lymphocytic Angiitis and Granulomatosis
benign lymphocytic meningitis
Benign lymphoepithelial lesion
Benign lymphoepithelial lesion
Benign lymphoepithelial lesion
Benign lymphoepithelial lesion
Benign lymphoepithelial lesion
benign lymphoreticulosis
benign lymphoreticulosis

benign m's

Benign Melanocytic Naevus
Benign mercantilism
Benign mercantilism
Benign mercantilism
benign mesenchymoma
benign metastasis
Benign Metastasising Leiomyoma
benign migratory glossitis
benign migratory glossitis
benign migratory glossitis
benign mucosal pemphigoid
benign mucosal pemphigoid
Benign Mucous Membrane Pemphigoid
Benign Multicystic Mesothelioma of Peritoneum
Benign Multicystic Peritoneal Mesothelioma
benign myalgic encephalomyelitis
benign myalgic encephalomyelitis
benign myalgic encephalomyelitis
Benign Myoclonic Epilepsy in Infancy
Benign Necrotizing Otitis Externa
benign neglect
benign neglect
Benign Neonatal Familial Convulsion
Benign neoplasm
Benign neoplasm
Benign neoplasm
Benign neoplasms
Benign neoplasms
Benign neoplasms
benign nephrosclerosis

Melanoma (redirected from benign m's)

melanoma

Melanoma
(redirected from benign m's)