Primary liver yolk sac tumor with lung metastasis in adolescence: Rare case report
Bibliographic record
Abstract
Introduction: Germ cell tumors (GCTs) often arise within the gonads but occasionally appear within the extragonadal areas. Yolk sac tumors (YSTs), a type of GCT, are most often found in infants and adolescents due to puberty. However, primary liver YST cases are rare, with only one other reported case in the adolescent population. Case Report: The current case examines a 15-year-old female patient experiencing significant weight loss, respiratory issues, and fevers. After her blood work displayed high alpha-fetoprotein (AFP) levels, a biopsy revealed a stage four primary liver YST with lung metastasis. The infrequency and primary location of the tumor, combined with her age, create challenges in diagnosis and treatment. Due to its rarity, the reporting of this case may aid in diagnosis when encountered. We highlight and present our experience of management and prognosis of primary-hepatic YST when encountered in adolescents. Conclusion: At two years follow-up, the patient showed no evidence of recurrence or metastasis.
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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 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| 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".