Large anterior urethral calculus masquerading as periurethral abscess

Abstract

Urethral calculus causes variety of symptoms from simple dysuria to acute urinary retention. The diagnosis is many times not easy. A plain X-ray of the pelvis may aid in diagnosis. Due to variety of symptomatic presentations sometimes it is not the first diagnosis that comes to one’s mind. Management is by removal of the calculus via various methods ranging from endoscopic to open surgery. We present the case of an adult male, who was initially thought to have periurethral abscess due to stricture urethra but during investigations was found to have urethral calculus as the cause for his symptoms.

Support Vector Machine-Based Analysis of Holmium Laser Lithotripsy in Treatment of Urinary Calculus from Ultrasound Images

“…In response to these problems, the adoption of genetic algorithms to optimize the ultrasound image classification method of support vector machine (SVM) can solve the above problems to a certain extent, improve the comprehensive recognition rate, and effectively assist medical staff to classify and recognize ultrasound image defects. Technicians utilize ultrasonic nondestructive testing technology to detect defects [8,9], which is effective, fast, and convenient to identify defects in ultrasound images. It is of great significance to reduce the error of manual identification for the manufacture of metal workpiece.…”