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Related Concept Videos

Urinary Bladder01:23

Urinary Bladder

The urinary bladder is a hollow, muscular sac that temporarily stores urine before it is expelled from the body. It can hold approximately 600 mL of urine prior to micturition. The bladder is retroperitoneal and located behind the pubic symphysis in the pelvic floor.
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
Ureters01:22

Ureters

The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...

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Related Experiment Video

Updated: May 8, 2026

Evaluation of the Efficacy of the H. pylori Protein HP-NAP as a Therapeutic Tool for Treatment of Bladder Cancer in an Orthotopic Murine Model
06:12

Evaluation of the Efficacy of the H. pylori Protein HP-NAP as a Therapeutic Tool for Treatment of Bladder Cancer in an Orthotopic Murine Model

Published on: May 29, 2015

Bladder perivascular epithelioid cell tumours.

Rami Abou Ghaida1, Rami Nasr, Mohammed Shahait

  • 1Department of Urology, American University of Beirut Medical Center, Beirut, Lebanon. ra172@aub.edu.lb

BMJ Case Reports
|August 24, 2013
PubMed
Summary

Perivascular epithelioid cell tumors (PECOMAs) are rare urinary bladder findings. This case report details a PECOMA with a literature review.

Area of Science:

  • Oncology
  • Pathology

Background:

  • Perivascular epithelioid cell tumors (PECOMAs) are rare neoplasms.
  • PECOMAs are infrequently reported in English medical literature.
  • Genitourinary PECOMAs are exceptionally rare, with only 10 cases documented since 2003.

Observation:

  • This report presents a case of a urinary bladder PECOMA.
  • A detailed pathological description of the tumor is provided.

Findings:

  • The case contributes to the limited understanding of urinary bladder PECOMAs.
  • This highlights the rarity of PECOMAs in the genitourinary system.

Implications:

  • This case report adds valuable data to the scarce literature on urinary bladder PECOMAs.

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  • Further research may elucidate the specific characteristics and behavior of PECOMAs in this location.