Dysgerminoma of the ovary 35 years on: A single institutional experience
Bibliographic record
Abstract
e16523 Background: Ovarian dysgerminomas are rare but are relatively more common in women under 20 years of age in whom fertility is likely to be an issue. The aim of this study was to review our institutional experience in treating patients (pts) diagnosed with pure dysgerminoma. Methods: We performed a retrospective chart review of all pts diagnosed with ovarian dysgerminoma at the Princess Margaret Hospital, Toronto, between 1970 and 2005. Results: 65 pts were diagnosed with ovarian dysgerminoma, median age 21.9 years (range 8.1–64.1 yrs). 40 pts (62.5%) presented with FIGO stage IA disease; 3 (4.7%) stage IB; 6 (9.4%) stage IC; 2 (3.1%) stage II; and 13 (20.3%) at stage III, 1 unknown. Initial management was surgical for all pts: unilateral oopherectomy 47 pts (72.2%), 14 (21.5%) bilateral oophorectomy ± hysterectomy (12 pts), 3 (4.6%) cystectomy alone. 17 pts received chemotherapy, 15 adjuvant and 2 for residual disease (all post 1988); 8 for stage I, 1 for stage II, and 8 for stage III. 12 pts received etoposide and cisplatin (EP); 4 bleomycin, etoposide, and cisplatin (BEP); and 1 vincristine and cisplatin. 20 pts received adjuvant radiotherapy (all prior to 1985); 14 stage I; 1 stage II; and 5 stage III. 1 pt received a combination of adjuvant chemotherapy and radiation. 6 (9.2%) pts recurred all within 19 months of initial diagnosis. 5 of the 6 pts that recurred had stage IA disease treated with a unilateral oophorectomy, 1 received adjuvant EP. 1 pt with stage IIIC disease recurred following bilateral oophorectomy + hysterectomy and radiotherapy. Treatment of recurrent disease was by salvage surgery and chemotherapy (3 pts), radiotherapy (2 pts), and EP (1 pt). All pts who recurred responded to treatment and were alive at last follow up, median follow up 22.5 yrs (range 9.3–31.4 yrs). Median follow up, all pts, was 10.5 yrs (range 1.1 to 31.9 yrs). 15 pts attempted to conceive posttreatment; 6 had received adjuvant treatment; 4 EP; and 2 whole abdominal radiotherapy. 13 successful pregnancies and 13 live births were reported in 9 women (3 had received adjuvant EP). Conclusions: The long-term outcome of patients with an ovarian dysgerminoma is excellent. Recurrences occured within 2 years of diagnosis and are treatable. Patients can be treated with fertility sparing surgery and can expect good reproductive outcomes. No significant financial relationships to disclose.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".