Laparoscopic resection of a left retroperitoneal solitary fibrous tumor
Bibliographic record
Abstract
Introduction Retroperitoneal sarcomas (RPS) are rare tumors, comprising 15 % of all soft tissue sarcomas (STS). Surgery remains the cornerstone of treatment for localized RPS and is tailored to histologic type. 1 In liposarcoma, the most common RPS, en-bloc resection of the tumor with adjacent organs (such as the colon, kidney, and psoas muscle) is performed to ensure complete clearance of ipsilateral retroperitoneal fat and minimize the risk of local recurrence. Conversely, solitary fibrous tumors (SFT) have a lower risk of local recurrence, and adjacent organs are resected only if invaded. 2,3 Minimally invasive surgery (MIS) may be considered for select patients with SFT at specialized sarcoma centers. 4 Video This video presents a 67-year-old man with a 9 cm left retroperitoneal SFT treated with preoperative radiotherapy. The patient underwent laparoscopic en-bloc resection, including a marginal portion of the ipsilateral psoas and quadratus lumborum muscles, perirenal fat, and gonadal vessels, while the ipsilateral kidney, ureter, and femoral nerve were preserved. Results Following multidisciplinary discussion, and considering histologic type, preoperative radiotherapy, and initial imaging, complete en-bloc resection was achieved with a kidney-sparing procedure, resulting in negative microscopic margins. Oncological surgical principles for STS were upheld, with dissection performed outside anatomical planes to ensure clear margins. Postoperative recovery was uneventful, and the patient was discharged home on postoperative day 4. The patient is alive and disease-free one year after surgery. Conclusions This video demonstrates the feasibility and safety of MIS for select patients with retroperitoneal SFT treated at sarcoma referral centers, emphasizing adherence to oncological surgical principles.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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".