 Site created by Dr Sampurna Roy MD
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Dr. Sampurna Roy MD
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Surgical-Pathology.com
INDEX: A-D ; INDEX: E-L ;INDEX: M-P ;INDEX: Q-Z ; FUNGAL DISEASE ; VIRAL DISEASE. |
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Melanocytic tumours 1. Acquired Melanocytic Naevus
Ancient Naevus
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Pathology of the Eyelid Inflammatory diseases of the Eyelid Tumour and tumour-like lesions of the Eyelid Epidermal tumours of the Eyelid |
| Cutaneous Deposits |
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Superficial spreading melanoma may
develop in any part of the body and at any age. It is commonly noted on the trunk and lower extremities. Macroscopically, the lesion has a variegated colour and an expanding irregular margin . Dermatlas Image link Histologically , the lesion is characterized by proliferation of atypical melanocytes at all levels in the epidermis. The tumour cells are present singly and in nests. There is evidence of pagetoid spread in the epidermis (buckshot spread). The tumour cells may be epithelioid, spindle or nevus cell-like in appearance. The superficial adnexal epithelium may be involved. The differential diagnosis includes extramammary and mammary Paget's disease, squamous carcinoma with pagetoid pattern in the epidermis . S100 and HMB45 stains are positive in melanoma. Verrucous melanoma is a variant of superficial spreading melanoma and is characterized by prominent epidermal hyperplasia and elongation of rete ridges.
Pigmented Bowen's Disease of the
FingerMimicking Malignant Melanoma.
Arch Iran Med. 2007 Apr;10(2):225-7. |
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Pigmented melanocytic lesions causing diagnostic
problems Prognostic parameters of melanoma Superficial spreading melanoma |
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Myxoid
Tumours of Soft Tissue Classification of Soft Tissue Tumour Fibroblastic/Myofibroblastic tumours |