The authors have kept 182 patients aged 5-17 suffering from tumors and tumor-like masses in the ovaries under observation. They most often diagnosed retention cysts which had tendency towards regression without any surgical procedures. Among the true tumors, germinogenous ones and serous cystadenoma were predominant. Malignant tumors were detected at three observations. If there was a necessity to remove tumors, both lowtraumatic laparoscopic operations aimed at tumor enucleating and cyst punctures were preferable even in cases of emergency. Thus, in authors' opinion, as to young patients all ovary operations must be only performed by strict indications to a maximum sparing extent, as any resection of ovary results in ovarian reserve loss and reduction of generative function in the future.