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Clinical Problem Solving: Pathology
February 2007

Pathology Quiz Case 2: Diagnosis

Author Affiliations


Arch Otolaryngol Head Neck Surg. 2007;133(2):201. doi:10.1001/archotol.133.2.201

Molluscum contagiosum is a virally induced epithelial hyperplasia caused by the MC virus (MCV), which is a large, double-stranded DNA virus and the most common poxviral pathogen that infects humans.1,2 It replicates and lives in the cytoplasm of the epidermal cells.3 This common benign skin infection primarily affects children. It also affects sexually active adults and some immune-suppressed patient populations.2,4 However, our patient was an immunocompetent adult. The reason for the predominance of MC in children remains unknown.5

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