First case of invasive squamous cell carcinoma in a stoma of a Monti ileovesicostomy
Bibliographic record
Abstract
We report a very rare case of invasive squamous cell carcinoma (SCC) in the abdominal stoma of a Monti ileovesicostomy. Our patient underwent an uncomplicated Monti ileovesicostomy at age 16 for a neurogenic bladder. She presented 10 years later with difficulty catheterizing the stoma. A biopsy of peristomal tissue showed moderately differentiated SCC. A cystoscopy did not reveal any bladder tumours or suspicious lesions. A computed tomography (CT) scan of the abdomen and pelvis did not demonstrate metastasis. The patient underwent a complete en bloc resection of the stomal site, the Monti, a partial cuff of bladder, and 2 loops of bowel that were adherent to the Monti. Final pathology revealed pure invasive SCC arising around the stoma and negative surgical margins. Six months later, a follow-up CT scan showed no evidence of malignancy, while a cystoscopy revealed a small erythematous area in the posterior bladder wall. Urinary cytology was positive for SCC. Transurethral resection of the erythematous lesion with random bladder biopsies showed SCC in situ in the erythematous lesion and right lateral bladder wall. Staging workup was negative. The patient subsequently underwent a radical cystectomy and ileal conduit diversion with bilateral pelvic lymph node dissection. Final pathology on cystectomy specimen was SCC in situ without evidence of invasive carcinoma. The patient has remained in remission at the 3-year follow-up.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".