Williamson J D, Silverman J F, Tafra L
Department of Pathology and Laboratory Medicine, East Carolina University School of Medicine, Pitt County Memorial Hospital, Greenville, North Carolina, USA.
Diagn Cytopathol. 1999 Jun;20(6):367-70. doi: 10.1002/(sici)1097-0339(199906)20:6<367::aid-dc7>3.0.co;2-s.
Fewer than 50 cases of carcinoma arising in a pilonidal sinus have been reported, with only 5 patients having documented inguinal lymph node metastases. This is the first report of the fine-needle aspiration (FNA) diagnosis of this uncommon clinical situation of squamous-cell carcinoma arising in a pilonidal sinus, metastatic to an inguinal lymph node. We report on a 59-yr-old male with squamous-cell carcinoma arising in a pilonidal sinus who presented with inguinal adenopathy. FNA biopsy of a lymph node was performed, resulting in a diagnosis of metastatic squamous-cell carcinoma. FNA biopsy is useful in the evaluation of patients with inguinal adenopathy and a history of malignancy arising in a pilonidal sinus. The possibility of this rare complication should also be considered when metastatic squamous-cell carcinoma to an inguinal lymph node is diagnosed by FNA cytology in patients having an unknown primary except for a change in a long-standing pilonidal cyst.
据报道，发生于藏毛窦的癌少于50例，仅有5例患者有腹股沟淋巴结转移的记录。本文是首例关于通过细针穿刺抽吸（FNA）诊断藏毛窦发生鳞状细胞癌并转移至腹股沟淋巴结这种罕见临床情况的报告。我们报告一名59岁男性，其藏毛窦发生鳞状细胞癌并伴有腹股沟淋巴结肿大。对一个淋巴结进行了FNA活检，结果诊断为转移性鳞状细胞癌。FNA活检对于评估有腹股沟淋巴结肿大且有藏毛窦恶性肿瘤病史的患者很有用。当通过FNA细胞学诊断腹股沟淋巴结转移性鳞状细胞癌而患者原发灶不明，但有长期存在的藏毛窦变化时，也应考虑这种罕见并发症的可能性。
