Introduction

Sebaceous adenoma is a benign skin tumor most commonly occurring in association with Muir-Torre syndrome. Dermoscopy of sebaceous adenoma is underinvestigated, but the presence of yellow color is thought to be its most characteristic dermoscopic feature.

Objective

To present untypical dermoscopic patterns of two cases of sebaceous adenoma in one patient.

Case report

We present the case of an 80-year-old man with amelanotic tumor on the right cheek and adjacent dark macule. On dermoscopy, reported lesions presented with branched vessels over pink background and brown-grayish structureless areas. Histopathological evaluation showed the architecture of sebaceous adenoma in both lesions with preserved expression of MLH1, MSH2, MSH6 and PMS2.

Conclusions

Sebaceous adenoma should be considered in differential diagnosis when a combination of yellowish structures and unfocused arborizing vessels is observed on dermoscopy. However, branched vessels over pink background and brown-grayish structureless areas may be within dermoscopic spectrum of the tumor.