[Lactate dehydrogenase activity in the diagnosis of retinoblastoma].

The authors examined the lactic dehydrogenase activity and that of its isoenzymes in a group of 22 orbit with a confirmed diagnosis of retinoblastoma. They investigated and evaluate total LDH in the vitreous humour and blood serum and the ration of isoenzymes LDH 5 to LDH 1 in the same media. The assembled results confirmed that in eyes with retinoblastomas a significant pathological rise not only of the total LDH takes place but the response of isoenzymes is even more sensitive. The examination is therefore a qualitative asset to the clinical diagnosis of retinoblastoma.