Nevoid basal cell carcinoma syndrome (NBCCS), also known as Gorlin syndrome, is a rare hereditary condition characterized by a wide range of developmental abnormalities and a predisposition to neoplasms. The syndrome consists of early-onset and/or multiple BCC. Herein we report a rare NBCCS case in which the first BCC onset occurred in the groin area. To the best of our knowledge, there have be...

Pigmentary mosaicisms are nevoid diseases characterized by the presence on the skin of hyperor hypopigmented macules with particular clinical patterns. Occasionally they show association with extracutaneous defects that may alter the normal development of the affected person. We present a compilation of all the cases of pigmentary mosaicism evaluated at our Department in the past decade (Dermat...

Incidence of medulloblastoma is 1.5-2 cases per 100,000 population, with 350 new cases in the United States each year. Although the majority occur as sporadic cases, hereditary conditions have been associated with medulloblastoma, including (1) Gorlin syndrome (nevoid basal cell carcinoma syndrome), (2) blue rubber-bleb nevus syndrome, (3) Turcot syndrome (eg, glioma polyposis syndrome), and (4...

Nevoid melanoma is a rare tumor with the origin in melanin-producing cells called melanocytes. The main particularity of this is
 resemblance benign tumor, compound intradermal nevi, despite malignant behavior and aggressivity. On usual stain, we generally observe tumoral proliferation solid architecture, organized nests. cytological atypia observed high power fields; pagetoid migration co...