Inflammatory-myofibroblastic tumour with acute calculous cholecystitis in a sessile gall bladder in a young woman.

A woman in her 30s presented with acute cholecystitis. Blood and radiological investigations supported the clinical diagnosis. Diagnostic laparoscopy showed a thickened inflamed gall bladder (GB). Laparotomy was performed that showed a thickened sessile inflamed GB. There was no involvement of adjacent organs, ascites or metastasis. Histopathology showed an inflammatory myofibroblastic tumour (IMT) in a sessile GB. The tumour is classified as intermediate grade of malignancy by the World Health Organization. There are eight reported cases of IMT, all of which were successfully treated with resectional surgery with only one recurrence at 13 months. One year later, our case had no evidence of recurrence. To conclude IMT could be successfully treated by open surgical resection. To the best of our knowledge, this is the first report of an IMT of the GB presenting with acute calculous cholecystitis; in addition, the cystic duct was absent.