The Ringlike Pattern in Vulvar Melanosis

The ringlike pattern in vulvar melanosis: a new dermoscopic clue for diagnosis.

BACKGROUND Vulvar melanosis is a benign pigmented lesion that may clinically mimic melanoma. Whereas the dermoscopic features of other pigmented skin lesions have been extensively described, little is known about vulvar melanosis. OBSERVATIONS A retrospective dermoscopic study was conducted on 87 lesions with histopathologically proved melanosis. We describe and define, for the first time to ...

Vulvar nevi, melanosis, and melanoma: an epidemiologic, clinical, and histopathologic review.

Pigmented vulvar lesions are present in approximately 1 in 10 women and include melanocytic and nonmelanocytic proliferations. Vulvar nevi, melanosis, and melanoma are particularly challenging because of the similarity of their clinical and/or histopathological presentation. As a result, they are often difficult to diagnose, may result in patient and physician anxiety, and can lead to unneeded,...

Macular pigment shows ringlike structures.

PURPOSE The spatial distribution of macular pigment is generally assumed to monotonously decrease to very low values in the periphery. However, there are indications that this picture may be too simple. The purpose of this study was to examine the spatial distribution of the macular pigment optical density. METHODS Fundus reflectance and autofluorescence maps at 488 and 514 nm Argon laser wav...

On Melanosis

Melanosis coli.

n engl j med 368;24 nejm.org june 13, 2013 2303 A 50-year-old woman underwent colonoscopy for rectal bleeding. Her entire colon appeared dark brown and black, a finding consistent with the diagnosis of melanosis coli (Panel A). Random biopsy specimens from the descending colon revealed sheets and clusters of macrophages laden with brownish pigment in the lamina propria (Panel B, arrow). A tiny,...