Granulomatosis With Polyangiitis
Granulomatosis With Polyangiitis Key Points Granulomatosis with polyangiitis (GPA) is a chronic multisystem vasculitic autoimmune disease that is more common in older white males It was previously referred to as…
Granuloma Annulare
Granuloma Annulare Key Points Granuloma annulare is a benign dermatological condition that occurs in healthy children It occurs clinically as several different forms, including generalized, subcutaneous, and perforating variants The…
Glomuvenous Malformation (Glomus Tumor)
Glomuvenous Malformation (Glomus Tumor) Key Points Glomuvenous malformation is a rare benign hamartoma of the glomus body The pathogenesis and genetics of sporadic GVM are poorly understood but BRAF or…
Fibrous Histiocytoma
Fibrous Histiocytoma Key Points Fibrous histiocytoma (FH) is a soft-tissue tumor characterized by a proliferation of spindle-shaped cells, usually admixed with inflammatory cells It is believed to originate from a…
Erythema Multiforme
Erythema Multiforme Key Points Erythema multiforme (EM) is an acute, self-limited or recurrent, immune-mediated disorder that affects the skin and mucous membranes Clinically, EM is classified as EM minor and…
Erysipelas
Erysipelas Key Points Erysipelas is a nonnecrotizing bacterial infection of the superficial layers of the skin The most common causative organism is Streptococcus pyogenes (group A streptococci) S. pyogenes has…
Distensible Venous Malformations (Varices)
Distensible Venous Malformations (Varices) Key Points Distensible venous malformations (DVMs) are abnormally enlarged and tortuous veins, or less commonly Periocular DVMs are more commonly seen in the orbit than in…
Dermatofibroma
Dermatofibroma Key Points Dermatofibroma is a benign, cutaneous form of fibrous histiocytoma occurring in the dermis of the skin The etiology remains controversial but theories include a reactive process or…
Dermoid Cyst
Dermoid Cyst Key Points Dermoid cysts are a common developmental cystic choristoma Approximately 7% occur in the head and neck most commonly in the periorbital region Ninety percent or more…
Cutaneous Horn
Cutaneous Horn Key Points A cutaneous horn is a firm, variably pigmented, conical projection composed of compacted keratin They may arise on top of benign, premalignant, or malignant skin lesions…
