Crescentic Glomerular Injury: Describe Before You Diagnose

Learning objective: Systematically identify, describe, and interpret an active glomerular lesion while avoiding an unsupported etiologic diagnosis.

Educational simulation only. This exercise is not intended for clinical diagnosis or patient-care decision-making.

Clinical context

A 64-year-old patient presents with rapidly worsening kidney function, microscopic hematuria, and proteinuria. A kidney biopsy is performed. Review the light-microscopy image before viewing immunofluorescence, electron microscopy, or serologic findings.

Information intentionally withheld

Immunofluorescence results
Electron microscopy findings
ANCA testing
Anti-GBM antibody testing
Complement levels

These findings are initially withheld so that the learner describes the morphology before assigning an etiologic diagnosis.

BiopsyIQ supports deliberate visual practice, structured reasoning, and educator-guided feedback in renal pathology education.