Ashley R. Mason

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Cutaneous examination revealed erythematous targetoid plaques with dusky centers symmetrically distributed on the chin, neck, flexural forearms, central chest, breasts, flanks, inner thighs, and anterior legs (Figure 1 and Figure 2). In addition, there were numerous tense vesicles and bullae in the same distribution (Figure 1). Palms, soles, and mucous(More)
Nevirapine is a non-nucleoside reverse transcriptase inhibitor commonly used in human immunodeficiency virus-1 multidrug regimens and associated with life-threatening cutaneous reactions. Here, we report the successful use of intravenous immunoglobulin in a pediatric patient with Stevens-Johnson syndrome and highlight the risk of nevirapine usage in human(More)
BACKGROUND Spitz nevi and Spitzoid melanomas show overlapping histopathologic features, often making the diagnosis challenging. The p16 protein functions as a tumor suppressor and loss of its expression may be seen in some melanomas. METHODS We evaluated 18 Spitz nevi and 19 Spitzoid melanomas from the Yale Spitzoid Neoplasm Repository for p16 expression.(More)
The objective of the study was to catalog hair shaft abnormalities in individuals with ectodermal dysplasia (ED) syndromes using light microscopy and to compare findings with those in unaffected controls. Light microscopy was performed in a nonblinded manner on hair shafts from 65 participants with seven types of ED (hypohidrotic ED, ED-ectrodactyly-cleft(More)
BACKGROUND Mutation in the folliculin gene in Birt-Hogg-Dubé (BHD) syndrome leads to a spectrum of benign tumors of the hair follicle, classically including both fibrofolliculoma and trichodiscoma. In addition, lesions clinically indistinguishable from fibrofolliculoma/ trichodiscoma may show histopathologic findings of perifollicular fibroma or(More)
IMPORTANCE Azathioprine hypersensitivity syndrome can present clinically and histopathologically like Sweet syndrome. Shared clinical features include fever, constitutional symptoms, prompt response to systemic corticosteroid therapy, neutrophilia, and abrupt onset of erythematous cutaneous lesions. Histologically, both azathioprine hypersensitivity(More)