Lower abdominal solitary fibrous tumor suspected as a urachal lesion: a case report with cytohistological correlation

  • Neelam Sood
  • Priyanka Bhatia Soni Deen Dayal Upadhyay Hospital , New Delhi , India
Keywords: Solitary fibrous tumor, Uncommon, Urachus, Intraabdominal


Urachus is the embryological remnant of urogenital sinus and allantois. Benign urachal neoplasms including adenomas, fibromas, fibroadenomas, fibromyomas, and hamartomas have been reported. However, no cases of solitary fibrous tumour  of the urachus have been reported. An 18 year old male presented with a lower abdominal mass with pain and urinary frequency. Computed tomography showed a mass abutting dome of the urinary bladder and anterior abdominal wall; however, the fat plane was maintained. Fine needle aspiration cytology was suggestive of a mesenchymal lesion. Surgical exploration revealed a mass attached to umbilicus on one end and dome of bladder on the other. Histopathological diagnosis was solitary fibrous tumor which was corroborated with immunohistochemistry findings. Patient has not reported back with recurrence. This case is being presented because of its unusual location and clinical suspicion of urachal lesion with no residual histological evidence of its remnant in the tumour.

Author Biography

Priyanka Bhatia Soni, Deen Dayal Upadhyay Hospital , New Delhi , India
Senior Resident , Department of pathology


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Case Report