Anorectal involvement is frequent in limited systemic sclerosis

Area of Science:

• Gastroenterology
• Rheumatology
• Clinical Physiology

Background:

• Systemic sclerosis frequently impacts the gastrointestinal system, with oesophageal involvement noted in approximately 50% of patients.
• Anorectal tract involvement in systemic sclerosis remains understudied, necessitating further investigation into its prevalence and functional impact.

Purpose of the Study:

• To investigate anorectal function in patients with limited systemic sclerosis using anorectal manometry.
• To explore potential correlations between oesophageal and anorectal involvement in this patient cohort.

Main Methods:

• Anorectal manometry was performed on 12 patients with limited systemic sclerosis to assess anal function.
• Measurements included maximum resting pressure, maximum voluntary squeeze effort, and the rectoanal inhibitory reflex.
• Oesophageal function was evaluated by measuring the difference between intragastric and oesophageal pressure.

Main Results:

• All patients exhibited decreased maximum resting pressure and maximum voluntary squeeze effort.
• The rectoanal inhibitory reflex was found to be abnormal in four patients.
• A significant correlation was observed between maximum resting pressure and maximum voluntary squeeze effort; however, no correlation was found between oesophageal and anorectal involvement.

Conclusions:

• Anorectal dysfunction is a common finding in patients with limited systemic sclerosis.
• Routine evaluation of anorectal function, including anorectal manometry, is recommended for these patients.
• The study highlights the need for increased awareness and diagnostic focus on anorectal complications in systemic sclerosis.