Jain Sarina, Patro Sibasish, Darkase Bhushan, Dongre Atul M, Khopkar Uday S
Dermatology Department, Seth GS Medical College & KEM Hospital, Mumbai, India.
Dermatology Department, MKCG Medical College, Berhampur, India.
J Cutan Pathol. 2018 Aug;45(8):629-632. doi: 10.1111/cup.13281. Epub 2018 Jun 13.
Smooth muscle hamartoma (SMH) is a benign hamartomatous condition that consists of a dermal proliferation of smooth muscle cells. We hereby report a case of multiple, acquired SMHs on scalp. A 25-year-old male had a 6-year history of multiple, asymptomatic, hyperpigmented plaques on the scalp which were progressively increasing in number and size. Histopathological examination revealed large thick-walled blood vessels, in addition to the haphazardly arranged discrete smooth muscle bundles in the reticular dermis. This case of SMH is unusual in being acquired, having multiple lesions, involving scalp, and having thick-walled blood vessels apart from arrector pili muscle bundles. It emphasizes the wide spectrum of clinical and histopathological variations that may be associated with acquired SMH.
平滑肌瘤错构瘤（SMH）是一种良性错构瘤性疾病，由真皮内平滑肌细胞增殖构成。我们在此报告一例发生于头皮的多发性后天性SMH病例。一名25岁男性有6年头皮多发、无症状、色素沉着斑块病史，斑块数量和大小逐渐增加。组织病理学检查显示，除了网状真皮内杂乱排列的离散平滑肌束外，还有大的厚壁血管。该SMH病例的不寻常之处在于其为后天性、有多个病变、累及头皮且除了立毛肌束外还有厚壁血管。它强调了后天性SMH可能相关的广泛临床和组织病理学变异。
