Karaca Semsettin, Kulac Mustafa, Dilek Fatma Husniye, Polat Coskun, Yilmaz Sezgin
Department of Dermatology, Afyon Kocatepe University, Turkey.
Dermatol Surg. 2005 Dec;31(12):1734-6. doi: 10.2310/6350.2005.31323.
Proliferating trichilemmal tumors are rare cutaneous neoplasms that show features of typical pilar cysts but also show extensive epithelial proliferation, variable cytologic atypia, and mitotic activity. Proliferating trichilemmal tumors are benign lesions; however, there are numerous reports of malignant proliferating trichilemmal tumors.
We present a case of benign proliferating trichilemmal tumor of an 81-year-old woman that was located on the left superior gluteal region for 30 years.
A tumor measuring 9 x 7 cm was surgically excised with a 1 cm conservative margin of normal tissue.
Based on the histopathologic findings of tumor, this case was diagnosed as proliferating trichilemmal tumor. The patient's condition was successfully treated with total excision.
Our case is an unusual presentation of proliferating trichilemmal tumor. Physicians should be aware of this entity while differentiating cutaneous tumor located on the gluteal region.
增生性外毛根鞘瘤是一种罕见的皮肤肿瘤，具有典型毛鞘囊肿的特征，但也表现出广泛的上皮增生、不同程度的细胞异型性和有丝分裂活性。增生性外毛根鞘瘤是良性病变；然而，有许多关于恶性增生性外毛根鞘瘤的报道。
我们报告一例81岁女性的良性增生性外毛根鞘瘤，位于左臀上区30年。
手术切除一个大小为9×7 cm的肿瘤，正常组织切缘为1 cm。
根据肿瘤的组织病理学表现，该病例诊断为增生性外毛根鞘瘤。患者通过完全切除成功治愈。
我们的病例是增生性外毛根鞘瘤的一种不寻常表现。在鉴别位于臀区的皮肤肿瘤时，医生应了解这种病变。
