A Worm-Like Illusion: Fibrin Clot Mimicking Parasitic Infection in a Child With Hematuria.

Hematuria in children often presents a diagnostic puzzle, especially when cystoscopic findings are unexpected-such as the appearance of worm-like structures. We report the case of a 13-year-old male with recurrent hematuria, initially suspected of having a parasitic bladder infection based on endoscopic findings. Ultimately, histopathology identified the structure as a fibrin clot. This case emphasizes the importance of including fibrin clots in the differential diagnosis of pediatric hematuria and highlights the essential role of pathology in guiding management when visual impressions might mislead.