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Related Concept Videos

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,...
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,...
Appendicitis01:19

Appendicitis

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Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
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Appendicitis-I: Introduction

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Aneurysm I: Introduction

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Related Experiment Video

Updated: Jul 17, 2026

Posterior Approach for Debridement of the Psoas Abscess
06:02

Posterior Approach for Debridement of the Psoas Abscess

Published on: March 2, 2020

[An unusual perianal abscess].

Marie Soulier1, Lucile Andrac-Meyer, Stéphane Berdah

  • 1Service d'Anatomie et Cytologie Pathologiques, Hôpital Nord, Marseille. mariesoulier@hotmail.com

Gastroenterologie Clinique Et Biologique
|February 3, 2007
PubMed
Summary

Aggressive angiomyxoma (AA) is a rare pelvic tumor. This case highlights diagnostic challenges, emphasizing that delayed diagnosis of this mesenchymal tumor can impede optimal treatment.

Related Experiment Videos

Last Updated: Jul 17, 2026

Posterior Approach for Debridement of the Psoas Abscess
06:02

Posterior Approach for Debridement of the Psoas Abscess

Published on: March 2, 2020

Area of Science:

  • Oncology
  • Pathology

Background:

  • Aggressive angiomyxoma (AA) is a rare mesenchymal tumor originating in the perineal or lower pelvic connective tissue.
  • It has a high rate of local recurrence but typically does not metastasize.

Observation:

  • A 58-year-old woman presented with a pelvi-perineal mass initially misdiagnosed as an anal abscess.
  • The mass was surgically excised.

Findings:

  • Histopathological examination revealed aggressive angiomyxoma with characteristic myxoid and vascular components.
  • Immunohistochemistry confirmed positivity for vimentin and CD34.

Implications:

  • This case underscores the diagnostic difficulty of aggressive angiomyxoma.
  • Delayed diagnosis can significantly impact the effective management and treatment outcomes for these rare tumors.