title: Pelvic extramedullary hematopoiesis.
abstract: Extramedullary hematopoiesis is an infrequent cause of thoracic masses. Extrathoracic locations are even less common. We have studied two patients, one with suspected pelvic neoplasm, with technetium-99m sulfur colloid marrow image and transmission computerized tomography. This noninvasive evaluation established the diagnosis of pelvic extramedullary hematopoiesis in both. We recommend a similar diagnostic approach in patients with chronic anemia or other predisposing disease, presenting with a pelvic or abdominal mass.
mesh_terms: D000328:Adult; D000755:Anemia, Sickle Cell / Q000000981:diagnostic imaging; D001853:Bone Marrow / Q000000981:diagnostic imaging; D005260:Female; D006410:Hematopoiesis; D006801:Humans; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging; D008482:Mediastinum / Q000000981:diagnostic imaging; D008875:Middle Aged; D010386:Pelvic Neoplasms / Q000000981:diagnostic imaging; D010388:Pelvis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D013455:Sulfur; D013667:Technetium; D013671:Technetium Tc 99m Sulfur Colloid; D013789:Thalassemia / Q000000981:diagnostic imaging; D014055:Tomography, Emission-Computed
chemical_list: D013671:Technetium Tc 99m Sulfur Colloid; D013455:Sulfur; D013667:Technetium