Primary Bone Tumors in Children and Adolescents Treated at a Referral Center in Northern Tanzania
Bibliographic record
Abstract
Bone tumors account for a small fraction of childhood cancers. Most published reports are from developed countries. The purpose of this study was to review the primary bone tumors in children and adolescents treated at a referral center in Northern Tanzania. We completed a 10-year hospital-based cross-sectional study in which all patients younger than 20 years diagnosed with a primary bone tumor at the Kilimanjaro Christian Medical Center Orthopaedic Department from January 2006 to December 2015 were identified and reviewed. Of the 80 identified patients, 15 (18.8%) were aged 5 to 8 years, and 65 (81%) were aged 9 to 19 years. Forty-seven males (59%) and 33 females (41%) were identified. The most common tumor locations were the femur, tibia, and humerus. Osteosarcoma was the most common malignant diagnosis (49 patients, 61%). No cases of Ewing sarcoma were reported. The most common tribal origins of the patients were Chagga and Maasai. Most primary bone tumors treated at a referral center in Northern Tanzania are malignant, with osteosarcoma representing the vast majority. No cases of Ewing sarcoma were identified in this tertiary referral hospital-based database.
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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 | 0.001 | 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".