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CASE REPORT
Year : 2021  |  Volume : 8  |  Issue : 2  |  Page : 78-80

Squamous cell carcinoma arising in recurrent pilonidal sinus in an older woman


Division of Colorectal Surgery, Department of Surgery, Taitung MacKay Memorial Hospital, Taitung, Taiwan

Correspondence Address:
Dr. Yu- Ting Hung
Division of Colorectal Surgery, Department of Surgery, Taitung MacKay Memorial Hospital, No. 1, Lane 303, Changsha Street, Taitung 950
Taiwan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JCRP.JCRP_3_21

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Malignant transformation is a rare complication of pilonidal sinus. We report the case of a 90-year-old female who had a recurrent pilonidal sinus with fistulous abscess formation. We excised the whole pilonidal sinus because the infection could not be controlled by oral antibiotics. Squamous cell carcinoma (SCC) was found in the sinus tract with a negative surgical margin. A whole abdominal computed tomography scan was performed, which showed no distant metastasis and no enlargement of the bilateral inguinal lymph nodes. This case study illustrates that SCC transformation may present in the recurrent and long-standing pilonidal sinus. We suggested that all pilonidal sinus lesions should be sent for pathologic examination to early detect malignant transformation.


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