Awareness of the extraintestinal manifestations of Crohn disease is increasing in dermatology and gastroenterology, with enhanced identification of entities that range from granulomatous diseases recapitulating the underlying inflammatory bowel disease…
Granulomatous cutaneous T-cell lymphomas (CTCL) and lymphomatoid granulomatosis are considered granulomatous lymphoproliferative disorders. The most common types of granulomatous CTCL are granulomatous mycosis fungoides and granulomatous slack skin. Lymphomatoid granulomatosis…
Vasculitides are uncommon disorders, characterized by inflammation of the blood vessels resulting either in ischemia or hemorrhage. They are commonly classified as small-, medium-, or large-vessel vasculitides. Antineutrophil cytoplasmic antibody-associated…
Adult xanthogranuloma presents most commonly as an orange-tan firm solitary nodule with no systemic manifestations. Recently, some cases have been reported in conjunction with lymphoproliferative disorders. Adult reticulohistiocytosis classically presents…
Adult orbital xanthogranulomatous diseases are rare entities and encompass a group of disorders with varying manifestations that are poorly understood. Taken as a group, there are non-Langerhans histiocytic disorders (type…
Granulomatous rosacea and periorificial dermatitis are common skin conditions affecting the face. This article examines the historical origin, causes, clinical presentation, and management strategies for these entities. Key points •…
Sarcoidosis is a disease characterized by noncaseating granulomatous infiltration of 1 or more organs. In North America, after the lungs and thoracic lymph nodes, the skin is the next most…
The terms “palisaded neutrophilic and granulomatous dermatitis,” “interstitial granulomatous dermatitis,” and the subset “interstitial granulomatous drug reaction” are a source of confusion. There exists substantial overlap among the entities with…
Rheumatoid nodules are a common manifestation of rheumatoid arthritis. These lesions are often easily identified based on typical diagnostic features and characteristic locations. When biopsied, nodules have a characteristic histologic…
Necrobiosis lipoidica is a granulomatous condition presenting as indolent atrophic plaques, often on the lower extremities. There is a multitude of case reports suggesting possible associations and documenting different therapeutic…
