The plaque-Type blue nevus (PTBN) is a rare variant of blue nevus, of which only a few reports are described. A nodular growth within a preexistent PTBN should always alert to the possibility of malignant transformation. The authors report the first case of an atypical Spitz tumor arising on a congenital linear PTBN in a 60-year-old woman. The diagnosis of "atypical Spitz tumor" is here used to describe a microscopic "gray zone" in which it is not possible to differentiate with adequate certainty between a Spitz nevus and a spitzoid melanoma. This report adds to and summarizes the small body of literature describing PTBN and discusses diagnosticand clinical implications.

Atypical Spitz tumor arising on a congenital linear plaque-Type blue nevus: a case report with a review of the literature on plaque-Type blue nevus

RONGIOLETTI, FRANCO;
2015-01-01

Abstract

The plaque-Type blue nevus (PTBN) is a rare variant of blue nevus, of which only a few reports are described. A nodular growth within a preexistent PTBN should always alert to the possibility of malignant transformation. The authors report the first case of an atypical Spitz tumor arising on a congenital linear PTBN in a 60-year-old woman. The diagnosis of "atypical Spitz tumor" is here used to describe a microscopic "gray zone" in which it is not possible to differentiate with adequate certainty between a Spitz nevus and a spitzoid melanoma. This report adds to and summarizes the small body of literature describing PTBN and discusses diagnosticand clinical implications.
Atypical Spitz tumor; Combined nevus; Plaque-Type blue nevus; Spitzoid melanoma; Subcutaneous nodules; Cell transformation, neoplastic; Female; Humans; Middle aged; Nevus, blue; Nevus, epithelioid and spindle cell; Skin neoplasms
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/185182
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