title: Extra skeletal osteosarcoma of gall bladder: A case report.
abstract: Extraskeletal osteosarcoma is a rare malignant soft tissue tumor. At open cholecystectomy performed for gallstones, a 45-year-old woman was found to have extraskeletal osteosarcoma on histopathological examination. 1 year after surgery, the patient is symptom free and all imaging studies are normal. After multidisciplinary discussion it was decided to give no further treatment. The patient was asked to follow up three monthly. Although osteosarcoma has rarely been reported at other extraskeletal sites, this appears to be the third case of a primary tumor in the gallbladder.
authors.affiliation: Department of Radiation Oncology, Dr. B.R. Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India.
authors.forename: Abhishek
authors.initials: A
authors.lastname: Shankar
authors.affiliation: Department of Medical Oncology, Dr. B.R. Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India.
authors.forename: Ranjit Kumar
authors.initials: RK
authors.lastname: Sahoo
authors.affiliation: Department of Radiation Oncology, Dr. B.R. Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India.
authors.forename: Abhidha
authors.initials: A
authors.lastname: Malik
authors.affiliation: Department of Pathology, All India Institute of Medical Sciences, Delhi, India.
authors.forename: Aanchal
authors.initials: A
authors.lastname: Kakkar
authors.affiliation: Department of Radiation Oncology, Dr. B.R. Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India.
authors.forename: Goura Kishor
authors.initials: GK
authors.lastname: Rath
mesh_terms: D001706:Biopsy; D005260:Female; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D008875:Middle Aged; D012516:Osteosarcoma / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
keywords: Extraskeletal osteosarcoma; Gallbladder