[Acute toxoplasmic myelitis in the newborns].

The present paper describes 3 patients with congenital toxoplasmosis. The spinal cord was extremely affected. Differential diagnoses were established with poliomyelitis and neonatal hypoxia.

[Toxoplasmosis. Anatomo clinical characteristics and morphological indentification of the parasite using the silver-impregnation technic].

The clinical and anatomicopathological characteristics of acute and chronic toxoplasmosis are described as they affect different structures and systems. The lesion to adrenal glands is compared to that seen in disseminated herpes simplex; however, the question remains as to why in both congenital infections, necrosis of adrenal glands appears without inflammatory reaction. The investigation of special techniques for localization and identification of Toxoplasma gondii "groups" or cysts, leads to the conclusion that Grocott's silver impregnation technique used for the identification of Entamoeba histolytica is also useful to discover Toxoplasma in tissues.

[Congenital toxoplasmosis].

Judged by the cases studied at the Hospital de Pediatría, congenital toxoplasmosis may be transmitted to several descendants and the infection capacity of the mother persists for a long time. The possibility of toxoplasma infection should be investigated in cases of hydrocephalus, convulsions, microcephalia, ocular lesions or pictures of neonatal hepatitis. To explain invasion to the central nervous system by Toxoplasma gondii, a pathogenic hypothesis is offered.