Zhang Ying Marlene, Kolmos Ida Lykke, Dyring-Andersen Beatrice
Department of Dermatology, Zealand University Hospital, Sygehusvej 10, Roskilde 4000, Denmark.
Department of Pathology, Copenhagen University Hospital - Herlev and Gentofte, Borgmester Ib Juuls Vej 73, Herlev 2730, Denmark.
J Surg Case Rep. 2025 Sep 6;2025(9):rjaf701. doi: 10.1093/jscr/rjaf701. eCollection 2025 Sep.
Schwannomas are benign peripheral nerve sheath tumors commonly found on the head, neck, and extremities, but they rarely occur on the feet and toes. Here, we present a case report of a 70-year-old woman with an ulcerated tender mass with an uncommon location on the lateral aspect of the left fifth toe. The tumor was initially misdiagnosed as hyperkeratosis, delaying correct treatment. Histological reassessment confirmed the diagnosis, schwannoma, highlighting the clinical challenges with diagnosing schwannomas due to their nonspecific appearance, and in this case, unusual presentation on the toe.
施万细胞瘤是常见于头部、颈部和四肢的良性周围神经鞘瘤,但很少发生于足部和脚趾。在此,我们报告一例70岁女性病例,其左足第五趾外侧有一个溃疡且压痛的肿物,位置不常见。该肿瘤最初被误诊为角化过度,延误了正确治疗。组织学重新评估确诊为施万细胞瘤,凸显了因施万细胞瘤外观不具特异性,以及在此病例中其在脚趾上的不寻常表现而导致诊断面临的临床挑战。