Table II. Final histology of the false positive cases and presumed diagnosis using pattern recognition of the false negative cases.
| False positives, Benign (n = 66) | False positives, Malignant (n = 9) | False negatives (n = 136) | ||||||
|---|---|---|---|---|---|---|---|---|
| Final histology, n (%) | Final histology, n (%) | Presumed diagnosis using pattern recognition, n (%) | ||||||
| Functional cyst | 25 | (38%) | Borderline | Cystadenoma | 27 | (20%) | ||
| Mucinous cystadenoma | 12 | (18%) | All | 5 | (56%) | Simple/functional cyst | 18 | (13%) |
| Serous cystadenoma | 8 | (12%) | Serous type | 3 (33%) | Hydrosalpinx | 13 | (10%) | |
| Simple cysts | 6 | (9%) | Mucinous type | 2 | (22%) | Abscess | 7 | (5%) |
| Hydrosalpinx | 6 | (9%) | Common primary invasive | Teratoma | 7 | (5%) | ||
| Abscess | 5 | (8%) | All* | 3 | (33%) | Peritoneal pseudocyst | 5 | (4%) |
| Dermoid cysts | 4 | (6%) | Stage I | 2 | (22%) | Fibroma | 2 | (1%) |
| Stage II-IV | 1 | (11%) | Rare benign | 2 | (1%) | |||
| Rare primary invasive | Borderline tumor | 8 | (6%) | |||||
| All** | 1 | (11%) | Primary ovarian cancer | 7 | (5%) | |||
| Inconclusive/not possible | 40 | (29%) | ||||||
*: all 3 masses were endometrioid adenocarcinomas; **: uterine clear cell carcinoma.