A Surgical Case of Heterotopic Thymic Carcinoma Coexisting With Hepatocellular Carcinoma
Bibliographic record
Abstract
Although thymomas arising in ectopic regions other than the upper anterior mediastinum are well known, thymic carcinomas in ectopic locations are very rare. On the other hand, the therapeutic strategies for synchronous double primary cancers arising from different organs are still controversial. We have experienced a case of thymic carcinoma in an ectopic location with a coexisting hepatocellular carcinoma (HCC) for which management presented a number of difficulties. A 67-year-old man with HCC presented with a slow-growing nodular shadow in the left lower anterior mediastinum, i.e. the left cardiophrenic angle. During 7 years of intensive treatment for the HCC, the mediastinal nodule, which had been suspected clinically to be a lymph node metastasis from the HCC, grew to 4 cm in diameter. Surgical intervention for the mediastinal nodule was carried out for treatment and definitive diagnosis using a mediastinoscope inserted via a transverse xyphoid incision. Intraoperative pathological diagnosis from frozen sections of the mediastinal nodule revealed thymic carcinoma, and therefore the procedure was converted to thymothymectomy via a median sternotomy. Despite postoperative multimodality treatment, the patient died due to multifocal metastasis and pleuritis carcinomatosa from the thymic carcinoma within 7 months after the thymothymectomy. The unusual location of the thymic carcinoma in this case and the synchronous nature of the coexisting primary HCC resulted in delay of surgical resection for the former. More intensive observation and early intervention in the form of diagnostic or therapeutic resection should be performed for any mediastinal nodule that appears during the course of treatment for HCC. J Med Cases. 2015;6(9):433-436 doi: http://dx.doi.org/10.14740/jmc2267w
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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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.004 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.005 | 0.004 |
| 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".