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Related Concept Videos

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...
Appendicitis-I: Introduction01:22

Appendicitis-I: Introduction

The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
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...
Appendicitis01:19

Appendicitis

Appendicitis is an acute inflammatory condition of the vermiform appendix, most commonly caused by obstruction of its lumen. The appendix is a narrow, blind-ended pouch that extends from the cecum, making it particularly prone to obstruction. Causes include fecaliths, lymphoid hyperplasia (often after viral infections), parasites, tumors, or foreign bodies. This obstruction initiates a cascade of pathological changes.Luminal Obstruction and Early InflammationAfter obstruction, normal mucosal...
Diverticular Disease of the Colon01:27

Diverticular Disease of the Colon

Diverticular disease involves the formation of diverticula—small sac-like outpouchings of the colonic wall—and their complications. It most commonly affects the sigmoid colon due to higher intraluminal pressure and structural vulnerability. It results from structural weakness and increased pressure in the colon, producing pseudodiverticula that may remain silent or progress to inflammation and serious complications.Structure of DiverticulaIn diverticulosis, these outpouchings are...
Peptic Ulcer Disease III: Clinical Manifestations and Complications01:25

Peptic Ulcer Disease III: Clinical Manifestations and Complications

Duodenal UlcersDuodenal ulcers are the most common form of peptic ulcer disease, presenting with chronic, intermittent epigastric pain. Pain typically appears 2–3 hours after meals, especially when the stomach is empty, often waking patients at night. It is characteristically relieved by food or antacids (“pain–food–relief”). Some patients remain asymptomatic until complications like bleeding or perforation emerge, particularly with NSAID or anticoagulant use.Gastric UlcersGastric ulcers share...

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Related Experiment Video

Updated: Jun 15, 2026

Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma
06:39

Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma

Published on: November 22, 2019

Peritoneal pseudomyxoma arising from the urachus.

Alejandra Martínez1, Gwénael Ferron, Eliane Mery

  • 1Institut Claudius Regaud, Surgery, 20-24, Rue du Pont Saint Pierre, 31052 Toulouse, France. martinez_a.alejandra@claudiusregaud.fr

Surgical Oncology
|March 2, 2010
PubMed
Summary

Pseudomyxoma peritonei (PMP) from urachal tumors is rare. Aggressive locoregional therapy, including cytoreductive surgery and hyperthermic intraperitoneal chemotherapy, is recommended for managing urachal PMP.

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Culture and Imaging of Ex Vivo Organotypic Pseudomyxoma Peritonei Tumor Slices from Resected Human Tumor Specimens
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Culture and Imaging of Ex Vivo Organotypic Pseudomyxoma Peritonei Tumor Slices from Resected Human Tumor Specimens

Published on: December 9, 2022

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Last Updated: Jun 15, 2026

Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma
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Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma

Published on: November 22, 2019

Culture and Imaging of Ex Vivo Organotypic Pseudomyxoma Peritonei Tumor Slices from Resected Human Tumor Specimens
09:19

Culture and Imaging of Ex Vivo Organotypic Pseudomyxoma Peritonei Tumor Slices from Resected Human Tumor Specimens

Published on: December 9, 2022

Area of Science:

  • Oncology
  • Surgical Oncology
  • Gastroenterology

Background:

  • Pseudomyxoma peritonei (PMP) is a rare condition characterized by mucinous ascites.
  • Urachal tumors are uncommon neoplasms arising from the remnant of the allantois.
  • The co-occurrence of PMP with urachal tumors presents unique clinical challenges.

Observation:

  • PMP arising from urachal tumors is exceptionally rare.
  • The natural history, behavior, morbidity, and prognosis of urachal PMP are primarily dictated by the PMP itself.
  • Clinical presentation and progression are heavily influenced by the extent and characteristics of the mucinous disease.

Findings:

  • The management of urachal tumors with associated PMP requires a tailored approach.
  • Aggressive locoregional therapy is crucial for effective disease control.
  • Cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy (HIPEC) offers a promising treatment strategy.

Implications:

  • This approach aligns with established protocols for PMP from other primary sites.
  • Effective management can potentially improve outcomes for patients with this rare condition.
  • Further research into the specific biological behavior of urachal PMP is warranted.