An Unusual Entity in Urology: Urinary Bladder Paraganglioma
Bibliographic record
Abstract
Bladder paraganglioma accounts for < 0.05% of all bladder tumors, and very few cases have been reported to date. Because clinical and radiological findings are often nonspecific, many lesions are misdiagnosed until surgery, exposing patients to preventable perioperative catecholamine crises. We report an unusual case of a 77-year-old woman, in whom a 17-mm bladder paraganglioma was discovered incidentally during imaging for suspected Crohn's disease. The patient was entirely asymptomatic and had normal catecholamine levels. Transurethral resection of the bladder (TURB) achieved complete excision, and no recurrence was detected at 6-month follow-up. This case illustrates that bladder paraganglioma can occur outside the typical age range and without adrenergic symptoms, emphasizing the need to consider this entity in the differential diagnosis of any well-circumscribed, hypervascular bladder mass. Early recognition enables appropriate perioperative planning and long-term multidisciplinary surveillance. We discuss the tumor's characteristics, management, and the importance of long-term surveillance.
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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 | 0.001 | 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".