title: Small cell osteosarcoma of the parietal region: a unique case at an unusual site.
abstract: Small cell osteosarcoma is a rare tumour that histologically mimics Ewing sarcoma, mesenchymal chondrosarcoma and lymphoma, the presence of osteoid being diagnostic. This variant needs different management protocol, being non-radiosensitive and behaving more aggressively than conventional osteosarcoma. The aim of this article is to highlight such an entity at an unusual site--the parietal region--with unique diagnostic, treatment and prognostic considerations in a 16-year-old girl.
authors.affiliation: Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Shipra
authors.initials: S
authors.lastname: Agarwal
authors.affiliation: Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Gaurav P S
authors.initials: GP
authors.lastname: Gahlot
authors.affiliation: Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Ashu
authors.initials: A
authors.lastname: Bhalla
authors.affiliation: Department of Medical Oncology, Dr. B. R. A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Sameer
authors.initials: S
authors.lastname: Bakhshi
mesh_terms: D000293:Adolescent; D000903:Antibiotics, Antineoplastic / Q000008:administration & dosage / Q000009:adverse effects; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000009:adverse effects; D001859:Bone Neoplasms / Q000150:complications / Q000188:drug therapy / Q000473:pathology*; D001929:Brain Edema / Q000209:etiology / Q000473:pathology*; D002945:Cisplatin / Q000008:administration & dosage / Q000009:adverse effects; D004317:Doxorubicin / Q000008:administration & dosage / Q000009:adverse effects; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D012516:Osteosarcoma / Q000150:complications / Q000188:drug therapy / Q000473:pathology*; D010296:Parietal Lobe / Q000473:pathology*; D012640:Seizures / Q000139:chemically induced*; D014839:Vomiting / Q000209:etiology
chemical_list: D000903:Antibiotics, Antineoplastic; D000970:Antineoplastic Agents; D004317:Doxorubicin; D002945:Cisplatin