An Unusual Presentation of Bladder Carcinoma in a Visceral Hernia: A Case Report and Literature Review.

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Bladder carcinoma (BC) is the most prevalent malignancy of the urinary system. These cancers are primarily seen in adults > 60 years old and mostly present with microscopic or frank hematuria or obstruction of the urinary system. However, these rare cancers can be found in hernias. This report discusses a rare, localized bladder urothelial carcinoma (UC) manifestation. The patient had presented with lower abdominal pain several times. However, no accurate diagnosis was made due to the unspecified pain features. After being referred to a radiologic evaluation with ultrasonography, a bladder hernia was detected entering the abdominal wall, and it contained an unusual mass. Further evaluations revealed the malignant feature of the tumor. The abdominal wall hernia was replaced, and a TURP procedure was performed. The resulting sample showed UC without the involvement of the muscle layer. One of the most common malignancies of the urogenital and reproductive systems in male patients is BCs. They are most commonly seen in men older than 60 years old with a history of smoking. The prevalent manifestations of cancer are microscopic or macroscopic hematuria, urinary obstruction, and abdominal pain. A rare but previously reported bladder cancer location is within inguinal or abdominal hernias. The diagnosis of this cancer is not always straightforward, and delays can result in the spread of malignancy and the transition of the patient's clinical condition to a poorer prognosis. The presentation of bladder cancer is not always accompanied by typical symptoms such as hematuria or urinary obstruction. Patients with persistent lower abdominal pain should be evaluated to rule out bladder malignancy. These tumors might be hidden within abdominal or inguinal hernias, and more radiologic accuracy is demanded for their diagnosis.