Table 1.

Mucinous carcinomas involving the ovary – distribution of pathologic features^*

Pathologic feature	N with feature	Assessable cases	% cases
Diameter <13 cm	16	44	36
Bilaterality	24	40	60
Nodularity	12	44	27
Surface involvement	22	44	50
Infiltrative invasion	34	44	77
Single neoplastic cells	28	44	64
Signet ring cells	9	44	20
Small glands/tubules	34	44	77
Hilar involvement	5	44	11
Necrotic luminal debris	8	44	18
Expansile growth pattern	17	44	39
Complex papillae	16	44	36

^*Number and % of cases with feature present as interpreted by reviewer #1. Pathologic feature listed above the solid line have been associated with mucinous carcinoma metastatic to the ovary, while those below the line with primary mucinous ovarian carcinoma; from Lee and Young.(9)