Granulomatous Rosacea Histopathologically Confused with Papulonecrotic Tuberculid: A Case Report

Abstract

The differential diagnosis of facial granulomas can be challenging in some cases, as multiple diseases have similar histopathological findings. Herein we describe a 36-year-old male with granulomatous rosacea that was initially diagnosed as papulonecrotic tuberculid based on the initial histopathological sections analyzed. This case presentation aimed to highlight both the need for re-evaluation of clinical findings and that examination of new histopathologic sections may be necessary for a definitive diagnosis of facial granulomas.

Peripheral ulcerative keratitis in a patient with granulomatous rosacea

“…Granulomatous rosacea (GR) is a variant of rosacea characterized by yellow–brown or pink papules around the cheeks, mouth, and eyes similar to skin disorders such as seborrheic dermatitis, demodicidosis, sarcoidosis, granuloma faciale, and perioral dermatitis. [ 1 ] However, the etiology of GR is not fully understood. [ 2 ] Chronic inflammation and T-helper 17 (Th17) activation are found to be associated with GR.…”