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Updated: Jan 7, 2026

Urinary Bladder Distention Evoked Visceromotor Responses as a Model for Bladder Pain in Mice
Published on: April 27, 2014
Bladder paraganglioma presenting with atypical abdominal pain: A diagnostic challenge
Yuchun Luo1, Juncheng Huang1, Hongwei Liu2
1Department of Urology, Central Hospital of Guangdong Nongken, Guangdong Province, Zhanjiang, 524002, China.
Abstract:
A 70-year-old man presented with a 10-day history of intermittent abdominal pain. Initial evaluation revealed a bladder nodule on imaging, but cystoscopy showed no tumor. Subsequent investigations including elevated urinary normetanephrine levels and MRI identified a hypervascular bladder mass supplied by the right internal iliac artery. Laparoscopic partial cystectomy confirmed a paraganglioma with positive immunohistochemistry (synaptophysin+, chromogranin A+). Postoperatively, symptoms resolved, and antihypertensive therapy was discontinued. This case highlights the importance of considering catecholamine-secreting tumors in patients with unexplained abdominal pain and hypertension, even without classic symptoms.
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