Vertebral haemangioma in a Roman period skeleton from the Dakhleh Oasis, Egypt
Bibliographic record
Abstract
Abstract A 50‐ to 65‐year‐old female, from the Roman period Kellis 2 (K2) cemetery in the Dakhleh Oasis, Egypt, shows macroscopic and imaging evidence of a vertebral haemangioma (VH). The centrum of the 12th thoracic vertebrae has an expanded and lysed cortex and thickened vertical trabeculae—producing the pathognomonic “corduroy” radiological sign. Additionally, the first lumbar vertebrae shows early changes of haemangioma that are not obvious macroscopically but clear on the X‐ray and the microcomputed tomography (μCT) imaging. VHs are relatively common (>10%) benign vascular tumours in extant adult populations. Its rarity in antiquity can be explained by the fact that in most archaeological samples, haemangiomas would not be macroscopically visible because the destruction and expansion of the cortex only occurs in advanced cases (usually in older individuals). In archaeological populations, older individuals (60+), though present, are much less common, and hence, the prevalence of VHs would be much lower than that reported in modern clinical samples. We posit that in order to determine the approximate prevalence of VHs in antiquity, a systematic radiographic study of an entire adult archaeological population sample is required. A caveat to this problem is that radiological diagnosis is difficult unless at least one third of the centrum is involved, and the classic radiological signs are manifested. A review of case studies suggest that X‐rays from T4 to L4 would include ~95% of the potential cases of VHs, and if a portable μCT unit can be developed, the natural history of VHs will be better established.
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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) | 0.000 | 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) | 0.001 | 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".