Two Cases of Umbilical Tumor

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  • 臍部腫瘍の 2 例
  • 症例 臍部腫瘍の2例
  • ショウレイ サイブ シュヨウ ノ 2レイ
  • Two cases of umbilical tumor. [Saibushuyou no 2 rei]. Article in Japanese.

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<p>We report two cases of umbilical tumor. Case 1 : A 46-year-old woman noticed a growing nodule in her navel that grew larger over the course of more than one year and started to bleed occasionally. On her first visit, she presented with a 25×20 mm light red-brown solid nodule in the umbilical fossa. It was not clear whether the tumordirectly communicated with the abdominal cavity on computed tomography imaging. Skin biopsy confirmed the diagnosis of cutaneous endometriosis, and so we surgically resected the lesion. Case 2 : A 73-year-old man had an umbilical tumor that often festered. On his first visit, he presented with a 15×15 mm dark violet solid nodule in the umbilical fossa. The tumor was resected, and histopathological examination showed a cystic lesion surrounded by scar tissue composed of fibroblasts and collagen fibers. He underwent laparoscopic cholecystectomy, and we concluded that the scar became hypertrophic with fistula formation. These findings confirmed the diagnosis of an epidermoid cyst covered with scar tissue. Before planning the surgical resection of an umbilical tumor, careful preoperative examination is necessary to evaluate the extent of tumor invasion, especially its communication with the abdominal cavity.</p>

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