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Assessment of the Rectum and Anus01:25

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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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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
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Meaning of Cystoscopic Examination:Cystoscopy is an essential diagnostic tool in urology that is used to assess the structure and function of the genitourinary system. It provides a direct view of the urethra, bladder, and, in some cases, the ureteral openings. This procedure helps detect structural abnormalities, infections, cancers, and blockages in the urinary tract. There are two types of cystoscopy:Flexible cystoscopy is commonly performed in outpatient settings due to its less invasive...
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Related Experiment Video

Updated: Mar 11, 2026

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Uncommon Anal Neoplasms.

Amitesh C Roy1, David Wattchow2, David Astill3

  • 1Department of Medical Oncology, Flinders Centre for Innovation in Cancer, Flinders Medical Centre, Flinders Drive Bedford Park, South Australia, 5042 Australia; Department of Surgery, Flinders University, Sturt Road, Bedford Park, South Australia 5042, Australia.

Surgical Oncology Clinics of North America
|November 28, 2016
PubMed
Summary
This summary is machine-generated.

Diagnosing rare anal canal cancers requires high suspicion and pathology expertise. Increased screening finds more lesions, but treatment involves complex surgery with significant side effects.

Keywords:
Anal lymphomaAnal melanomaAnal neuroendocrine tumorUnusual cancers

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Area of Science:

  • Gastroenterology
  • Oncology
  • Pathology

Background:

  • Uncommon anal canal neoplasms present diagnostic challenges in clinical practice.
  • Increased use of colonoscopy and MRI is leading to the detection of more small, incidental anal lesions.
  • Current treatment paradigms for anal canal neoplasms often mirror those for similar histologic subtypes in other anatomical locations.

Purpose of the Study:

  • To highlight the diagnostic difficulties associated with rare anal canal neoplasms.
  • To discuss the implications of increased detection rates due to advanced imaging and screening.
  • To emphasize the need for a centralized global registry for rare anal canal neoplasms.

Main Methods:

  • Review of current clinical practices and literature regarding anal canal neoplasms.
  • Discussion of diagnostic criteria and the role of pathology expertise.
  • Analysis of treatment strategies, including surgical interventions and their associated morbidities.

Main Results:

  • Anal canal neoplasms pose a significant diagnostic dilemma requiring high suspicion and specialized pathology.
  • The incidence of these neoplasms is expected to rise due to improved detection methods.
  • Surgical resection, while curative for early disease, carries substantial risks to quality of life.

Conclusions:

  • A high index of suspicion and advanced pathology expertise are crucial for managing rare anal canal neoplasms.
  • The increasing detection of incidental lesions necessitates careful consideration of management strategies.
  • Establishing a centralized global registry, potentially under the International Rare Care Initiative, is recommended to improve understanding and care.