DISEASE CHARACTERISTICS: Histologically confirmed recurrent or refractory ovarian epithelial or primary peritoneal carcinoma Bidimensionally measurable disease Ascites and pleural effusions are not considered measurable disease Sonography acceptable provided lesions are clearly defined on initial examination and bidimensionally measurable Must have had 1 prior platinum based chemotherapy regimen containing carboplatin, cisplatin, or another organoplatinum compound for management of primary disease Initial treatment may include high dose therapy, consolidation, or extended therapy administered after surgical or nonsurgical assessment No additional cytotoxic chemotherapy for management of recurrent or persistent disease, including retreatment with initial chemotherapy regimens Must be considered platinum resistant or refractory Treatment free interval of less than 6 months following platinum or progression during platinum based therapy No known brain metastases Must not be eligible for a higher priority GOG protocol