Understanding the Effects of Colostomy-induced Alterations on Cutaneous Immunity 

Area of Science:

• Immunology
• Dermatology
• Surgical Pathology

Background:

• Colostomies are common surgical outcomes requiring management of the peri-stomal skin.
• Understanding the local immune response is crucial for managing potential complications like inflammation and infection.

Purpose of the Study:

• To characterize the immunological cellular response in the dermal layer of the peri-colostomic region.
• To identify and quantify specific immune cell types present in this area.

Main Methods:

• Inclusion of 41 patients with colostomies for over 8 weeks.
• Statistical analysis using Mann-Whitney, Kruskal-Wallis, and Dunn tests.
• Quantification of T lymphocytes (pan T-CD3), B lymphocytes (CD20), T lymphocytes-natural killer (CD57), and T-helper cells (CD4).

Main Results:

• A significant frequency of T lymphocytes (pan T-CD3) was observed in all time periods, outnumbering B lymphocytes (CD20) and T lymphocytes-natural killer (CD57) (P < 0.001).
• T-helper cells (CD4) were more abundant in the initial three observation periods.
• The intensity of the immuno-cellular response did not significantly differ based on the duration of the colostomy.

Conclusions:

• Colostomy presence for over 8 weeks induces chronic inflammation and an immuno-cellular response in the peri-colostomic dermis.
• The response is primarily composed of T lymphocytes (pan T-CD3) and T-helper cells (CD4).
• Peak cellular activity was noted between 16-20 weeks, with reduced activity between 30-50 weeks.