Abstract: Five patients who suffered cysitic craniopharyngioma were admitted. The tube of Ommaya reservoir was inserted into the cyst, and the Ommaya reservoir was placed beneath the scalp for delivery of chemotherapy. The colors and LDH of the liquid in the tumors were studied, then pingyangmycin (bleomycin A₅) was injected into the cysitic tumor. Three of the five cysitic craniopharyngioma were complete regressed, the other two cases were shrinked. There was one case showing symptoms of cranial nerve damage. The outcome indicated that the local injection of pingyangmycin was effective against tumors of the cystic type.

Key words: craniopharyngioma, chemotherapy, pingyangmycin