Unexpected Location of a Testis Masquerading as Recurrent Tumour in Patients with Soft Tissue Sarcoma
Bibliographic record
Abstract
An unexpected malposition of a testis can present a diagnostic dilemma in the interpretation of surveillance imaging for malignancies, especially in the pelvis and lower limb. Instances of dislocated or undescended testes (cryptorchidism) mimicking disease are sparsely described in the literature. We describe a case of testicular malposition in two young male patients with known lower limb soft tissue sarcomas. In the first case, surveillance MRI revealed a displaced testis mimicking sarcoma recurrence, with testicular dislocation occurring through an inadvertent surgical defect created during primary sarcoma resection. The second case reports misinterpretation of an undescended testis as inguinal nodal disease. Understanding these potential pitfalls when interpreting images in male patients with lower limb sarcomas presents both an opportunity to avoid unnecessary surgery and biopsy, plus preventing known complications of infertility, torsion and malignancy.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".