Angiographic Imaging of an Aberrant Splenic Artery Origin From the Superior Mesenteric Artery in a Pediatric Liver Transplant Recipient
Bibliographic record
Abstract
OBJECTIVE: To describe an exceedingly rare vascular anatomical variant of the splenic artery arising from the superior mesenteric artery (SMA), termed a splenomesenteric trunk, with angiographic imaging in a pediatric patient. METHODS: Case review of a 6 year-old boy, status post liver transplantation for biliary atresia, who presented with ongoing hematemesis, melena, portal hypertension and chronic thrombocytopenia from hypersplenism. He underwent portal venous stenting, and we decided to perform a partial splenic embolization to reduce portal pressure and improve platelet counts. CT and angiographic imaging findings are presented, with literature correlation. RESULTS: CT 3D and DSA demonstrated the absence of the splenic artery on injection of the celiac trunk. Selective SMA angiography revealed a variant origin of the splenic artery from the SMA, with normal caliber and no aneurysm or stenosis. CONCLUSION: Recognition of this rare vascular variant is essential to avoid procedural complications. This represents, to our knowledge, the first angiographically documented case of a splenomesenteric trunk in a pediatric patient.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 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) | 0.002 | 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".