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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...
Intestinal Obstruction I: Introduction01:29

Intestinal Obstruction I: Introduction

Intestinal obstruction is a partial or complete blockage of the small or large intestine that disrupts the normal flow of intestinal contents through the lumen. This interruption impairs digestion, absorption, and fluid balance, and may lead to serious complications if not treated promptly.Mechanical ObstructionMechanical obstruction occurs when a physical blockage prevents intestinal contents from passing, arising from within the lumen or the bowel wall, or from external compression.Adhesions,...
Pyloric Obstruction01:11

Pyloric Obstruction

Pyloric obstruction, also referred to as gastric outlet obstruction, is a condition characterized by narrowing or blockage at the pylorus—the muscular valve regulating the flow of stomach contents into the duodenum. When this passage becomes impaired, the stomach cannot effectively empty its contents into the small intestine. This disruption leads to a range of gastrointestinal symptoms, including early satiety, bloating, epigastric pain, postprandial nausea, persistent vomiting, and...
Intestinal Obstruction II: Pathophysiology01:07

Intestinal Obstruction II: Pathophysiology

Intestinal obstruction triggers a series of physiological responses, starting with gas and fluid accumulation in the bowel segment proximal to the obstruction, leading to distension. This distended intestine compresses the diaphragm, hindering lung expansion and potentially leading to reduced respiratory effort, atelectasis, and pneumonia.To overcome the blockage, the gut intensifies contractions, causing colicky abdominal pain, nausea, and vomiting, which reduces fluid and food intake and...
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
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...

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An Immature Murine Model of Reversible Unilateral Ureteral Obstruction
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Mesenteric desmoid tumor causing ureteric obstruction.

Danielle Collins1, Eddie Myers, Dara Kavanagh

  • 1Surgical Professorial Unit, Department of Surgery, St Vincent's University Hospital, Elm Park, Dublin, Ireland. daniellecollins@rcsi.ie <daniellecollins@rcsi.ie>

International Journal of Urology : Official Journal of the Japanese Urological Association
|February 29, 2008
PubMed
Summary

Desmoid tumors, though benign, are locally invasive neoplasms. This case highlights a rare intra-abdominal desmoid tumor causing ureteral obstruction in a young female, posing diagnostic and therapeutic challenges.

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Area of Science:

  • Oncology
  • Urology
  • Pathology

Background:

  • Desmoid tumors are rare neoplasms, comprising 0.03% of all neoplasms and <3% of soft tissue tumors.
  • Despite being benign, desmoid tumors exhibit local invasiveness, leading to significant morbidity and mortality.
  • Intra-abdominal desmoid tumors can present with complex clinical scenarios, including ureteral obstruction.

Purpose of the Study:

  • To report a rare case of an intra-abdominal desmoid tumor causing hydronephroureter in a pediatric patient.
  • To emphasize the diagnostic challenges posed by intra-abdominal masses presenting as ureteral obstruction.
  • To highlight the therapeutic considerations for desmoid tumors in young individuals.

Main Methods:

  • Case presentation of a 16-year-old female with an intra-abdominal desmoid tumor.
  • Clinical evaluation including imaging to assess the extent of the tumor and its impact on the urinary tract.
  • Review of diagnostic and therapeutic strategies for similar cases.

Main Results:

  • The patient presented with hydronephroureter secondary to an intra-abdominal desmoid tumor.
  • The tumor's location and invasive nature presented a diagnostic dilemma.
  • Management required careful consideration of surgical and potentially other therapeutic options.

Conclusions:

  • Intra-abdominal desmoid tumors can cause significant urological complications, such as ureteral obstruction.
  • Early and accurate diagnosis is crucial for effective management of desmoid tumors in young patients.
  • This case underscores the importance of considering desmoid tumors in the differential diagnosis of intra-abdominal masses causing obstructive uropathy.