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Related Concept Videos

Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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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.
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Begin by inspecting the perianal and anal areas for color, texture, rashes,...
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Human Virome01:26

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The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible...
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Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
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The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
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Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
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Viral Hepatitis I: Introduction

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Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion...
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Related Experiment Video

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RNAscope for In situ Detection of Transcriptionally Active Human Papillomavirus in Head and Neck Squamous Cell Carcinoma
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Anorectal human papillomavirus: current concepts.

Roland Assi1, Vikram Reddy1, Hulda Einarsdottir1

  • 1Department of Surgery, Yale School of Medicine, New Haven, Connecticut.

The Yale Journal of Biology and Medicine
|December 16, 2014
PubMed
Summary

Anorectal human papillomavirus (HPV) infection, linked to sexual behaviors and HIV, requires careful management. Early detection and treatment of HPV-related lesions are crucial for preventing anal cancer.

Keywords:
anal cytologyanal intraepithelial neoplasiaanal squamous cell carcinomaanorectal infectionshuman papillomavirushuman papillomavirus vaccineperianal diseasesexual behaviorsexually transmitted diseases

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Area of Science:

  • Anorectal diseases
  • Oncology
  • Infectious diseases

Background:

  • Anorectal human papillomavirus (HPV) infection is increasingly prevalent, associated with evolving sexual behaviors and human immunodeficiency virus (HIV) co-infection.
  • Clinical manifestations and disease progression of anorectal HPV vary by viral serotype.
  • HPV serotypes 6 and 11 cause benign warts, manageable with local treatments, while HPV 16, 18, and 31 are linked to precancerous lesions and anal squamous cell carcinoma.

Purpose of the Study:

  • To highlight the clinical significance of anorectal HPV infection.
  • To emphasize the importance of recognizing and managing HPV-related dysplastic lesions.
  • To discuss current and emerging strategies for the prevention and treatment of anorectal HPV and associated cancers.

Main Methods:

  • Review of clinical presentations and natural history of anorectal HPV infection based on serotypes.
  • Evaluation of diagnostic and management strategies for benign and dysplastic anorectal lesions.
  • Assessment of the impact of vaccination on anorectal HPV infection rates.

Main Results:

  • HPV serotypes 6 and 11 are associated with benign anorectal warts, treatable with various local modalities.
  • High-risk HPV serotypes (16, 18, 31) are implicated in dysplastic lesions with malignant potential, necessitating timely intervention.
  • Early identification and management of high-grade dysplastic lesions are critical for preventing invasive anal cancer.
  • Vaccination studies show promising efficacy for anorectal HPV prevention in specific populations.

Conclusions:

  • Effective management of anorectal HPV involves distinguishing between low-risk and high-risk serotypes and lesions.
  • Prompt eradication of high-grade dysplastic lesions is essential to prevent anal cancer progression.
  • Vaccination strategies are evolving and show potential for reducing the burden of anorectal HPV infections and related cancers.