Primary bone malignancies in pregnancy. A report of four cases.

Primary malignant bone tumors are rarely associated with pregnancy. Because of the rare nature of the condition, the relevant literature available is scant, providing limited information to the clinician about its management. Common management problems stem from delayed diagnosis and the limitations on the use of routine therapeutic modalities (eg, radiation and chemotherapy) during pregnancy. The cases presented include two cases of Ewing's sarcoma, one case of osteosarcoma, and one malignant fibrous histiocytoma that is thought to be multicentric in origin. Three of these tumors involved the scapula. The patients' social customs and general medical ignorance significantly affected the outcome of these cases.