melanoma
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Two subtypes Clinical features •Usually slowly growing tumors •Predilection for the scalp •M>F •No age predilection & exceptionally, lesions can develop in children •High grade tumor probably related to delay in diagnosis & hence marked tumor thickness •Metastases develop in around 50% of cases to lymph nodes, lung & liver Histological features •Develops within a precursor lesion as one or more nodules of epithelioid or spindled cell melanoma •Or melanoma showing admixed blue nevus-like…
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Clinical features •Very rare variant of melanoma •M=F •Middle aged to elderly (mean age 57 years) •Back> lower & upper extremities> head & neck> choroid •Often ulcerated nodules •Balloon cells may be present in a metastasis & not in the primary tumor (and vice versa) •Poor prognosis is likely related to large tumor size at presentation Histological…
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Definition & clinical features •A melanoma which you diagnosed as nevus and wish that you hadn’t!; a melanoma that closely mimics especially on scanning magnification •The correct diagnosis often comes to light when it recurs or metastasizes •Results from insufficient time being spend on a nevoid lesion •Behaves no differently than any other melanoma •Everyone…
McKee Derm 