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Related Concept Videos

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...
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...
Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...
Disorders of the Female Reproductive System01:24

Disorders of the Female Reproductive System

The female reproductive system can be affected by several disorders, including Premenstrual Syndrome (PMS), Premenstrual Dysphoric Disorder (PMDD), endometriosis, and various forms of cancer. PMS and PMDD are cyclical conditions that cause physical and emotional distress, with symptoms that include edema, mood swings, and food cravings. PMDD is a more severe form of PMS characterized by increased symptom severity that peaks during the luteal phase and tends to improve or resolve shortly after...
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...
Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...

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Related Experiment Video

Updated: Jul 14, 2026

Posterior Approach for Debridement of the Psoas Abscess
06:02

Posterior Approach for Debridement of the Psoas Abscess

Published on: March 2, 2020

Endometriosis presenting like a psoas abscess.

Shyamasunder N Bhat1, Simanchal P Mohanty, Prahlad Kustagi

  • 1Department of Orthopedics, Kasturba Medical College and Hospital, Manipal 576104, India. shyambhatn@yahoo.com

Saudi Medical Journal
|May 29, 2007
PubMed
Summary

Endometriosis can occur in unusual retroperitoneal locations, mimicking a psoas abscess. Early diagnosis and treatment of this rare condition are crucial to avoid misdiagnosis and ensure patient recovery.

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Last Updated: Jul 14, 2026

Posterior Approach for Debridement of the Psoas Abscess
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Area of Science:

  • Gynecology
  • Radiology
  • Pathology

Background:

  • Endometriosis is characterized by ectopic endometrial tissue responsive to hormonal stimulation.
  • While typically pelvic, endometriosis can manifest in rare extra-pelvic sites.
  • Retroperitoneal endometriosis is an uncommon presentation.

Observation:

  • A 39-year-old female presented with a 5-year history of right hip pain.
  • Imaging revealed a multi-loculated mass in the right iliopsoas muscle, suggestive of a psoas abscess.
  • Surgical exploration identified a hemorrhagic cystic mass compressing the femoral nerve.

Findings:

  • Histological examination confirmed the mass to be endometriosis.
  • The patient received 3 months of cyclic hormonal suppressive therapy.
  • Complete resolution of hip pain and flexion deformity was achieved.

Implications:

  • Retroperitoneal endometriosis can clinically mimic a psoas abscess.
  • Considering this differential diagnosis is vital for appropriate patient management.
  • Timely diagnosis prevents unnecessary interventions and improves patient outcomes.