{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T10:10:13Z","timestamp":1774519813644,"version":"3.50.1"},"reference-count":27,"publisher":"BMJ","issue":"8","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Clin Pathol"],"published-print":{"date-parts":[[2000,8]]},"abstract":"<jats:p>\n                  <jats:italic>Aims<\/jats:italic>\u2014To describe the clinical and histopathological features of a rare variant of naevoid melanoma, small cell melanoma, and discuss the histological differential diagnoses.<\/jats:p>\n               <jats:p>\n                  <jats:italic>Methods<\/jats:italic>\u2014The clinical and histological features of cases of malignant melanoma with the histological features of small (non-Merkel like) melanoma were reviewed and documented. In addition, five cases had available material for immunohistochemistry and this was performed using antibodies to the S100 protein and melan-A, and the HMB-45 antibody.<\/jats:p>\n               <jats:p>\n                  <jats:italic>Results<\/jats:italic>\u2014There were 15 cases of small cell melanoma from 14 (10 female, four male) patients, aged between 30 and 77 (mean, 48.6) years. The trunk was the most common location. In more than half the cases, the provisional diagnosis was melanoma\/borderline lesion. All shared similar histological appearances of an intraepidermal component of in situ melanoma and a dermal component of nests of cells with hyperchromatic nuclei and scanty cytoplasm, usually in tightly packed nests. All components (junctional and intradermal) of the lesions investigated by immunohistochemistry were positive both for S100 protein and melan-A. All junctional components were positive with HMB-45, but with variable staining of the dermal components with this antibody.<\/jats:p>\n               <jats:p>\n                  <jats:italic>Conclusions<\/jats:italic>\u2014Small cell malignant melanoma is postulated to be a distinct histopathological entity and a rare variant of naevoid melanoma. Such lesions can be difficult to interpret and easily missed at scanning magnification because the cells of the dermal component mimic benign naevus cells. <\/jats:p>","DOI":"10.1136\/jcp.53.8.591","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T06:37:59Z","timestamp":1027751879000},"page":"591-595","source":"Crossref","is-referenced-by-count":41,"title":["Small cell malignant melanoma: a variant of naevoid melanoma. 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