Differential Diagnosis in Dermatopathology

Discussions

Features clinical common to amputation neuroma secondary to rudimentary supernumerary digit and acquired digital fibrokeratoma are location, shape, and consistency. Both conditions occur on or near fingers and both are firm, keratotic, polypoid proj…

Differential Diagnosis in Dermatopathology

Trichoadenoma vs. Microcystic adnexal carcinoma

A condition of persons of any age, but particularly children with a genetic proclivity for allergic rhinitis and conjunctivitis, and allergic asthma. Intense pruritus induces patients to rub the skin intensely and to scratch furiously, the resultant…

Histologic Diagnosis of Inflammatory Skin Diseases

Parasitic infestations

…zil. Int J Dermatol 2004 Jul;43(7):511-15. Kaposi M. Parasitic diseases of the skin, dermatoses parasitaire. In: Hebra F, Kaposi M. On Diseases of the Skin Including the Exanthemata. London: New Sydenham Society, 1880: 5. Magana M, Messina M, Bustama…

Differential Diagnosis in Dermatopathology

Discussions

At first glance at the two columns preceding, one for attributes histopathologic of xanthogranulomas (childhood and adult) and the for reticulohistiocytic granuloma, a student could conclude that the two “granulomas” were separate and di…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema multiforme

…ema multiforme in children, and Lyell catalogued two unrelated diseases under the lone heading of “toxic epidermal necrolysis”; one of those diseases is an analogue in adults of Stevens-Johnson syndrome, i.e., severe widespread erythema m…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen striatus

…ous epidermal nevus is included here as an “inflammatory disease,” even though it truly is a hamartoma, the reason for that liberty being taken because clinically, and histopathologically, it resembles an inflammatory disease, as the firs…