Mandibular Actinomyces osteomyelitis mimicking osteosarcoma
Bibliographic record
Abstract
Introduction: Actinomyces is a relatively uncommon cause of infection of the head and neck. However, its presentation is usually atypical and can be difficult to recognize. In this case report, we present the diagnostic and therapeutic challenges that can arise from cervicofacial actinomycosis. Case presentation: A 26-year-old woman from Northern Manitoba in her second trimester of pregnancy presented to the emergency department with a 2-month history of progressive pain and swelling of her right mandible. Imaging revealed lytic lesions involving the angle and ramus of the right mandible with possibility of osteosarcoma, and she was taken for hemimandibulectomy. Intraoperative specimens revealed Actinomyces odontolyticus . She was subsequently started on piperacillin–tazobactam that was later stepped down to amoxicillin–clavulanate with radiographic and clinical improvement of her osteomyelitis. Conclusion: Cervicofacial actinomycosis may mimic several neoplastic, granulomatous and infectious conditions, and often require tissue culture for diagnosis. Therapy often necessitates a combination of surgical resection and prolonged medical therapy, which is tailored to the burden of disease in the individual patient.
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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".