Complete Clival Resorption and Pontine Pneumatosis Secondary to Severe Cocaine-Induced Midline Destructive Lesion: A Case Report
Bibliographic record
Abstract
BACKGROUND AND IMPORTANCE: Cocaine-induced midline destructive lesions manifest as various degrees of distortion to normal anatomy. We present a rare case of substance-induced clival defect that underwent surgical repair. CLINICAL PRESENTATION: This patient presented with transient neurological deficits and was found to have severe clival destruction and pontine pneumatosis secondary to prolonged cocaine use. Surgical reconstruction of the clival defect was performed using a combined open and endoscopic approach. DISCUSSION: When anatomical integrity is severely compromised, defects of the clival region can be repaired using a hybrid open-endoscopic approach. In this case, the lack of local mucosal tissue for reconstruction led to the use of a pedicled pericranial flap. CONCLUSION: Complete clival resorption secondary to cocaine use is uncommon. In advanced cases, pontine inflammation is present on imaging studies. Combined endoscopic and open clival reconstruction is effective in restoring anatomic integrity.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.006 | 0.004 |
| Insufficient payload (model declined to judge) | 0.002 | 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".