Gupta Ruchika, Verma Sarika, Bansal Pankaj, Mohta Anup
Department of Pathology, Chacha Nehru Bal Chikitsalaya, Maulana Azad Medical College, Geeta Colony, Delhi 110031, India.
Case Rep Dermatol Med. 2012;2012:257405. doi: 10.1155/2012/257405. Epub 2012 Oct 4.
Pilomatrixoma, a benign skin appendageal tumor, is seen commonly in head and neck. Occurrence of pilomatrixoma in the upper extremities is not common and has been reported infrequently in the available literature. Only a few cases with preoperative aspiration cytology have been reported in the literature. A five-year-old girl underwent fine needle aspiration (FNA) of a firm subcutaneous nodule on the lateral aspect of left arm. FNA smears showed scattered and few fragments of round to oval cells along with multinucleated giant cells. Few shadow cells were seen. A cytologic impression of pilomatrixoma was rendered, which was confirmed on histopathology. Pilomatrixoma, a common skin appendageal tumor in head and neck region, should be considered in the cytologic differential diagnoses of subcutaneous masses even in unusual locations like arm. The varied cytomorphology should be remembered to avoid misdiagnosis.
毛发上皮瘤是一种良性皮肤附属器肿瘤，常见于头颈部。毛发上皮瘤发生在上肢并不常见，现有文献中报道较少。文献中仅报道了少数术前细针抽吸细胞学检查的病例。一名5岁女孩接受了左侧手臂外侧一个坚实皮下结节的细针抽吸（FNA）检查。FNA涂片显示有散在的少量圆形至椭圆形细胞碎片以及多核巨细胞。可见少量影细胞。做出了毛发上皮瘤的细胞学诊断印象，组织病理学检查证实了这一诊断。毛发上皮瘤是头颈部常见的皮肤附属器肿瘤，即使在手臂等不常见部位的皮下肿块的细胞学鉴别诊断中也应予以考虑。应牢记其多样的细胞形态学表现以避免误诊。
