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examination and diagnosis of vulvar melanoma

examination and diagnosis of vulvar melanoma

Common examination of vulvar melanoma

Examination of vulvar melanoma

1. Immunohistochemical staining

Combined histochemical staining of Keratin, Vimentin, S-100, HMB-45 and other antigens in melanoma cells is helpful for the diagnosis and differential diagnosis of melanoma. Generally, Keratin was negative, Vimentin and S-100 were all positive. HMB-45 is a specific antibody for malignant melanoma, but some malignant melanomas do not express pigment antigen. It is reported that the expression rate of HMB-45 in malignant melanoma is 90.6%.

2. Tissue culture

Melanoma without pigment can also produce melanin by tissue culture.

Histopathological examination of monoclonal antibody HMB-45 is highly sensitive and specific for melanoma, so immunohistochemical staining can assist pathological diagnosis. Some marginal normal tissues should be included when excising living tissues.

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