Titlebook: Histological Diagnosis of Nevi and Melanoma; Guido Massi,Philip E. Leboit Book 20041st edition Steinkopff-Verlag Darmstadt 2004 Dermatopat

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Steinkopff-Verlag Darmstadt 2004

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Criteria for the Diagnosis of Benign Melanocytic Nevus,This first section is dedicated to the illustration of the most important criteria for the diagnosis of a nevus and of other benign melanocytic lesions.

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Melanotic Macules,Melanotic macules are well-defined flat melanocytic lesions caused by a deposit of abundant melanin in the basal layer of the epidermis, accompanied by a slight increase in the number of melanocytes.

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Melanocytic Hyperplasia, the term atypical melanocytic hyperplasia has also been suggested, but this term is more frequently used as a description of early melanoma in situ. Ackerman describes this group of lesions as melanocytic proliferation on severely sun damaged skin.

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,Blue Nevus (“cellular” blue nevus), the dichotomy between “common” and cellular blue nevus is an oversimplification, but one that avoids the bewildering array of terms that more precise designations arise, as it somewhat correlate with clinical findings.

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Book 20041st editionto­ pathology. For example, the evaluation of the so called nevoid (spitzoid) melanoma, Spitz‘s nevi with conflicting criteria, or some benign simulators of malignant melanoma can pose seemingly insurmountable diagnostic problems. A correct diagnosis is expected, because the implications are seri­ o

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Proliferative Nodules in Congenital Nevi,above the surface of the congenital nevus or can be situated deeply within the lesion. The common denominator of the nevi in which proliferative nodules occur seems to be their depth rather than their diameter. In most cases, the deep reticular dermis and subcutaneous septa contain cords and strands of small, round melanocytes.