In this section we have Logan's cases since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.

Inverted follicular keratosis with sebaceous differentiation

By Operations Pathhub

August 30

Followers 0

Case 2981 9.12.21 (S. Taibjee) M 82 pigmented lesion, nostril, curetted

Some areas of typical seborrhoeic keratosis with squamous eddies. Prominent sebaceous differentiation, but no evidence of loss of MSH2, MSH6, MLH1 or PMS2.

Recent ref: Hayani KM, Zelger BG, Kind P, Zelger B. Seborrhoeic keratosis with sebaceous differentitation – a series of 8 cases and critical review of the literature. Am J Dermatopathol 2021 11: 801-10.