Haemorrhoids: Difference between revisions
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== Clinically Relevant Anatomy == | == Clinically Relevant Anatomy == | ||
Anal canal the end part of the gastrointestinal tract (GIT), | Anal canal is the end part of the gastrointestinal tract (GIT), it is about 4cm in length in women and more longer in men to be about 4.4 cm in length, passes downwards and backwards forming the anorectal angle. The internal lining mucousa membrane of anal canal divided by the pectinate line into two portions: the upper one the vertical anal columns (8-10 anal fold), at there ends there are valves (anal valves), above each one of these anal valves there is a shallow mucosal pocket called the anal sinus. the lower part below the line is formed of nonkeratinized squamous epithelium with no ducts it is sensitive to pain and provides an internal moisturizing to the canal<ref>Bazira PJ. [https://www.sciencedirect.com/science/article/pii/S0263931922002344#sec8 Anatomy of the rectum and anal canal]. Surgery (Oxford). 2022 Dec 7.</ref>. | ||
The anal canal is described into anatomical and surgical anal canal. The anatomical anal canal starts from the dentate line and ending at the anal verge, while the surgical anal canal extends from the anorectal ring (junction between the anal canal and rectum) to the anal verge<ref>Lee JM, Kim NK. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5951097/#:~:text=The%20dentate%20line%20is%20the,epithelium%20of%20the%20anal%20canal. Essential anatomy of the anorectum for colorectal surgeons focused on the gross anatomy and histologic findings]. Annals of Coloproctology. 2018 Apr;34(2):59.</ref>. | |||
== Mechanism of Injury / Pathological Process == | == Mechanism of Injury / Pathological Process == | ||
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Clinically Relevant Anatomy[edit | edit source]
Anal canal is the end part of the gastrointestinal tract (GIT), it is about 4cm in length in women and more longer in men to be about 4.4 cm in length, passes downwards and backwards forming the anorectal angle. The internal lining mucousa membrane of anal canal divided by the pectinate line into two portions: the upper one the vertical anal columns (8-10 anal fold), at there ends there are valves (anal valves), above each one of these anal valves there is a shallow mucosal pocket called the anal sinus. the lower part below the line is formed of nonkeratinized squamous epithelium with no ducts it is sensitive to pain and provides an internal moisturizing to the canal[1].
The anal canal is described into anatomical and surgical anal canal. The anatomical anal canal starts from the dentate line and ending at the anal verge, while the surgical anal canal extends from the anorectal ring (junction between the anal canal and rectum) to the anal verge[2].
Mechanism of Injury / Pathological Process[edit | edit source]
Clinical Presentation[edit | edit source]
Diagnostic Procedures[edit | edit source]
Management / Interventions[edit | edit source]
add text here relating to management approaches to the condition
Differential Diagnosis[edit | edit source]
add text here relating to the differential diagnosis of this condition
Resources[edit | edit source]
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References[edit | edit source]
- ↑ Bazira PJ. Anatomy of the rectum and anal canal. Surgery (Oxford). 2022 Dec 7.
- ↑ Lee JM, Kim NK. Essential anatomy of the anorectum for colorectal surgeons focused on the gross anatomy and histologic findings. Annals of Coloproctology. 2018 Apr;34(2):59.
