 Site created by Dr Sampurna Roy MD
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Dr. Sampurna Roy MD
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Melanocytic tumours 1. Acquired Melanocytic Naevus
Ancient Naevus
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| Nodular melanoma
is the second most common subtype
of melanoma. It represents 15% of all melanomas.
The most common sites for nodular melanoma are the trunk, head, and neck. The patients are usually in the fifth decade of life. It is more common for nodular melanoma to begin in normal skin rather than in a pre-existing lesion.
Macroscopically, the lesion presents as a nodular, polypoid or pedunculated dark brown or blue black lesion. Lesion may also present as an amelanotic nodule. Microscopic features: In nodular melanoma there is minimal or no radial growth phase. Histologically, the dermal component is usually composed of epithelioid type of cells . There is epidermal invasion directly over the dermal component . No adjacent intraepidermal component is seen.
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| Abstracts:
Melanoma simulating malignant soft tissue tumour.Cesk Patol. 2005;41(4):146-9.
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Pigmented melanocytic lesions causing diagnostic
problems Prognostic parameters of melanoma Superficial spreading melanoma |
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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 |
4. Dermal melanocytoses
Naevus of Ota
Naevus of Ito
Mongolian spot
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Congenital melanocytic naevi
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Dysplastic melanocytic naevi