Anaplastic thyroid carcinoma is a rare and a very aggressive thyroid malignancy with a dismal prognosis. It has a short history and presents with a rapidly increasing neck mass associated with compressive symptoms like pain, hoarseness of voice, dysphagia and shortness of breath. Osteoclastic variant is an extremely rare variant, which is, characterize by presence of a large number of multinucleated giant cells, which resemble osteoclasts. Here we report two cases of this unusual variant in a 68 years old and 49 years old male with a short history of thyroid swelling.

A 50-year-old woman was admitted to our emergency surgery department with 1-week history of abdominal pain, distension, vomiting and constipation. On examination, she has a distended abdomen with sluggish bowel sounds, but no clinical signs of peritonitis. Blood tests were normal except for the increased white cell count and erythrocyte sedimentation rate (ESR). CT scan with oral as well as intravenous contrast demonstrated the small bowel obstruction without any insight into the aetiology of the disease. Intraoperatively, the right fallopian tube was found to encircle the terminal ileum. A right salpingo-oophorectomy was performed to release the bowel. This case report describes a rare cause of the small bowel obstruction in female patients.