尾骨部嚢胞性疾患３手術症例の検討

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  • Review of Three Cases with Surgical Resection of a Coccygeal Cyst

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We report three cases of coccygeal cyst.<BR>Case 1 : A 24-year-old woman demonstrated a well-defined homogeneous area with colic approximately 6 cm in diameter on the posterior wall of the rectum by CT examination. A transsacral tumorectomy was performed. The tumor was an intestinal duplication cyst.<BR>Case 2 : A 60-year-old man had a mass on his rectum untreated for three years. A discrete area about 2 cm in diameter, with calcification, was noted on the right side of the rectum about 3 cm oral from the anus, and per anum tumorectomy was undertaken. The tumor was an intestinal duplication cyst.<BR>Case 3 : A 28-year-old woman was found to have a mass in the coccygeal region with colic, and a transsac-ral cystectomy was performed two months later. A tailgut cyst was suspected. The duplication cyst is composed of a smooth muscle layer and the serosa. The tailgut cyst is devoid of muscle layers and has a tubular structure covered with two to four layers of stratified columnar epithelium. As it is difficult to make a definite diagnosis of cystic disorders of the coccygeal region from preoperative examinations and as such disor-ders may become malignant, the mass should be excised en bloc.

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