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Related Concept Videos

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...
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...
Muscles of the Abdomen01:21

Muscles of the Abdomen

The abdominal wall encircles the abdominal cavity, providing flexible protection and shielding the internal organs from harm. It is bordered at the top by the xiphoid process and costal margins, at the back by the vertebral column, and at the bottom by the pelvic bones and inguinal ligament. The abdominal wall is divided into two regions — the anterolateral and posterior regions.
Anterolateral Region
The anterolateral region comprises five paired muscles classified into the lateral and anterior...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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...
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,...

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Related Experiment Video

Updated: May 29, 2026

Posterior Approach for Debridement of the Psoas Abscess
06:02

Posterior Approach for Debridement of the Psoas Abscess

Published on: March 2, 2020

Malignant Psoas abscess or pseudomyxoma extraperitonei.

Amber Mehmood1, Kiran Ejaz, Turab Ibrahim Pishori

  • 1Department of Emergency Medicine, The Aga Khan University Hospital, Karachi. amber.mehmood@aku.edu

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|September 15, 2011
PubMed
Summary

Primary appendiceal adenocarcinoma, a rare cancer, can manifest unusually. This case highlights a challenging diagnosis where it presented as a psoas abscess and pseudomyxoma peritonei.

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Last Updated: May 29, 2026

Posterior Approach for Debridement of the Psoas Abscess
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Culture and Imaging of Ex Vivo Organotypic Pseudomyxoma Peritonei Tumor Slices from Resected Human Tumor Specimens
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Surgical Approach and Complications of Stand-alone Lateral Trans-Psoas Interbody Fusion
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Area of Science:

  • Gastroenterology
  • Oncology
  • Infectious Disease

Background:

  • Primary adenocarcinoma of the appendix is a rare gastrointestinal malignancy.
  • Psoas abscess is an infection of the psoas muscle, often requiring thorough investigation for diagnosis.

Observation:

  • A patient presented with recurrent urinary tract infections due to ureteric obstruction and right hip pain from a psoas abscess.
  • The psoas abscess was found to be a consequence of metastatic adenocarcinoma of the appendix.

Findings:

  • The case demonstrates an exceptional combined presentation of appendiceal adenocarcinoma and psoas abscess.
  • The metastatic appendiceal cancer led to pseudomyxoma extraperitonei with concurrent intraperitoneal deposits.

Implications:

  • This case underscores the diagnostic challenges posed by rare presentations of common conditions.
  • Recognizing unusual metastatic patterns is crucial for timely diagnosis and management of appendiceal adenocarcinoma.
  • Highlights the importance of considering uncommon etiologies for psoas abscess, especially in the context of unexplained malignancy.