Clinicopathologic characteristics of early‐onset Becker's nevus in Korean children and adolescents

• Published in: International journal of dermatology 2018-01, Vol.57 (1), p.55-61
• Main Authors: Kim, Young J., Roh, Mi R., Lee, Ji H., Na, Jung I., Ko, Joo Y., Jung, Joon M., Lee, Jong H., Chang, Sung E.
• Format: Article
• Language: English
• Subjects: Adolescent; Adolescents; Age; Age of Onset; Androgens; Biopsy; Child; Child, Preschool; Children; Diagnosis, Differential; Differential diagnosis; Female; Hamartoma - complications; Hamartoma - congenital; Hamartoma - diagnosis; Hamartoma - pathology; Humans; Hyperpigmentation; Hyperpigmentation - etiology; Hypertrichosis; Hypertrichosis - etiology; Infant; Infant, Newborn; Lesions; Male; Muscle, Smooth; Muscles; Muscular Diseases - complications; Muscular Diseases - congenital; Muscular Diseases - diagnosis; Muscular Diseases - pathology; Neck; Neoplasia; Nevus; Nevus - complications; Nevus - diagnosis; Nevus - pathology; Patients; Puberty; Republic of Korea; Retrospective Studies; Sex Factors; Sex ratio; Skin; Skin diseases; Skin Neoplasms - complications; Skin Neoplasms - diagnosis; Skin Neoplasms - pathology; Smooth muscle
• ISSN: 0011-9059; 1365-4632
• DOI: 10.1111/ijd.13779

Background Becker's nevus (BN) presents as a hairy patch or plaque with or without proliferation of the dermal smooth muscles. BN has been described as acquired as found in a similar entity, congenital smooth muscle hamartoma (CSMH). This study was aimed at evaluating the clinicopathological aspects of BN in Korean cases in differential diagnosis with CSMH. Methods We performed a retrospective study of 103 patients histopathologically diagnosed as having BN or CSMH. The cases included 40 cases diagnosed with BN or CSMH before the age of 10 years who had clinical monitoring and a second skin biopsy after puberty to determine the disease course. Results Among cases of children to adolescents (