Stage IIb Extension to other pelvic tissues. Tumor either stage IIa or IIb. Tumor is limited to the true pelvis but with histologically proven malignant extension to small bowel or omentum. Stage IIIa Tumor grossly limited to true pelvis with negative nodes but with histologically confirmed microscopic seeding of abdominal peritoneal surfaces. Stage IIIb Tumor of one or both ovaries with histologically confirmed implants of abdominal peritoneal surfaces none exceeding 2 cm in diameter.
Nodes are negative.
Stage IV Growth involving one or both ovaries, with distant metastases. If pleural effusion is present, there must be positive cytology. Hemidiaphragm Right Paracolic Gutter Left Paracolic Gutter Pelvis Inspect every surface. Palpate every surface. Biopsy every surface, if suspicious.