[Multifocal osteosarcoma. A case report].

Unlabelled: Multifocal osteosarcoma is an uncommon and aggressive presentation of osteosarcoma.

Case Report: We report a case of multifocal osteosarcoma in a 12-year-old boy who was admitted for a tumor of the skull, associated with pleural and pulmonary nodules. A computed tomography scan of the head showed a calcified lesion with intra- and extracranial extent.

[Hodgkin's disease in the very young child. Apropos of 11 cases].

Hodgkin's disease (HD) in children of 4 years of age or younger is seldom reported. It seems more frequent in developing countries. We report on 11 cases out of 115 cases of HD in patients of 15 years of age or younger observed between 1980 and 1991.

Cytogenetic survey of 53 Moroccan patients with acute myeloblastic leukemia.

We present a cytogenetic survey of chromosome aberrations for 53 Moroccan patients with acute myeloblastic leukemia (AML). Our 53 patients were 2 to 70 years old with 31 men and 22 women. The cytogenetic study was performed with the following three methods: first, relative proportion of normal (N) or abnormal (A) metaphases; second, presence of specific or random abnormalities; and third, karyotype complexity.