en Radiation Biology Radiation Biology مطالعه موردي Case Report <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Bladder pheochromocytoma, as a rare bladder tumor, which originated from the chromaffin tissue of the sympathetic nervous system. It is difficult to distinguish from other non-epithelial tumors on imaging. This study reported a 31-year-old female, whose physical examination revealed a bladder mass for 50 days. The patient&rsquo;s main clinical symptoms included sudden headache, dizziness, increased blood pressure, and chest palpitations after intermittent micturition.</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"> However, laboratory tests showed that the 24-hour urine catecholamine levels (norepinephrine, vanillylmandelic acid [VMA] and metanephrine) were normal. </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Magnetic resonance imaging (MRI) showed a mass in the</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"> posterior bladder wall, the typical performance is&ldquo;light-bulb&rdquo; bright lesion on T2-weighted imaging. The mass was surgically excised, and histopathological examination revealed that it was a pheochromocytoma. During the first 3-month of postoperative follow-up, the patient&rsquo;s symptoms gradually subsided. To our knowledge, this is the first case reporting on the use of MRI imaging and specific image features of this rare bladder pheochromocytoma. Due to the better soft tissue resolution and multi-parameter on MRI, changes in the size and internal signal of the lesion can be clearly displayed. Thus, MRI is an indispensable tool in tumor diagnosis and prognosis assessment.</span></span></span></span></span></span></span></span></span></span></div> Bladder tumor, pheochromocytoma, clinical feature, magnetic resonance imaging. 517 520 http://ijrr.com/browse.php?a_code=A-10-1-939&slc_lang=en&sid=1 D.L. Qin 7900319475328460021742 7900319475328460021742 No Department of Medical Imaging, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, Shanxi Province, China L. Wang 7900319475328460021743 7900319475328460021743 No Department of Radiology, First Hospital of Shanxi Medical University, 85 Jiefang South Road, Taiyuan 030001, Shanxi Province, China J.F. Du 7900319475328460021744 7900319475328460021744 No Department of Radiology, First Hospital of Shanxi Medical University, 85 Jiefang South Road, Taiyuan 030001, Shanxi Province, China J.J. Li 7900319475328460021745 7900319475328460021745 No Department of Medical Imaging, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, Shanxi Province, China Q.J. Qu 7900319475328460021746 7900319475328460021746 No Department of Medical Imaging, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, Shanxi Province, China H.L. Yan 7900319475328460021747 7900319475328460021747 No Department of Medical Imaging, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, Shanxi Province, China Q.R. Dong 7900319475328460021748 7900319475328460021748 No Department of Medical Imaging, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, Shanxi Province, China H. Zhang zhanghui_mr@163.com 7900319475328460021749 7900319475328460021749 Yes Department of Radiology, First Hospital of Shanxi Medical University, 85 Jiefang South Road, Taiyuan 030001, Shanxi Province, China