Seasonal variation of eosinophil counts in histologically normal colonic mucosal biopsies

The eosinophil counts in colonic biopsies are affected by geographical and possibly seasonal variations. This study aims to investigate the significance of seasonal variations of eosinophil counts in histologically normal colonic mucosal biopsies. This is a retrospective, cross sectional study that...

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Veröffentlicht in:Malaysian journal of pathology 2023-04, Vol.45 (1), p.11-18
Hauptverfasser: Elshebli, S, Obeid, J, Abudalu, L, Albayati, A, Abo Osba, M, Alsadeq, O, Awad, H
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container_title Malaysian journal of pathology
container_volume 45
creator Elshebli, S
Obeid, J
Abudalu, L
Albayati, A
Abo Osba, M
Alsadeq, O
Awad, H
description The eosinophil counts in colonic biopsies are affected by geographical and possibly seasonal variations. This study aims to investigate the significance of seasonal variations of eosinophil counts in histologically normal colonic mucosal biopsies. This is a retrospective, cross sectional study that included 337 cases of normal colonic biopsies. The number of eosinophils per high power field was counted in the most densely populated area. The eosinophilic counts were compared among genders, age groups, biopsy sites and in various months and seasons. Two tailed T-test was used to compare means and a p value < 0.05 was considered significant. 173 (51%) of cases were from males. The age range was between 18-82 with the mean being 51.7 years (SD= 17.5). 181 (54%) biopsies were from the right colon and 156 (46%) from the left colon. There was a statistically significant difference between eosinophil counts in the right colon (mean 20.2, SD 13.2) and left colon (mean 13.8, SD10.1); p value
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This study aims to investigate the significance of seasonal variations of eosinophil counts in histologically normal colonic mucosal biopsies. This is a retrospective, cross sectional study that included 337 cases of normal colonic biopsies. The number of eosinophils per high power field was counted in the most densely populated area. The eosinophilic counts were compared among genders, age groups, biopsy sites and in various months and seasons. Two tailed T-test was used to compare means and a p value &lt; 0.05 was considered significant. 173 (51%) of cases were from males. The age range was between 18-82 with the mean being 51.7 years (SD= 17.5). 181 (54%) biopsies were from the right colon and 156 (46%) from the left colon. There was a statistically significant difference between eosinophil counts in the right colon (mean 20.2, SD 13.2) and left colon (mean 13.8, SD10.1); p value &lt;0.001. The mean eosinophil counts was highest in autumn (21.1) followed by spring (18.3). The counts in winter and summer were close (15.2 and 15.1 respectively). There was a statistically significant difference between counts in autumn and summer (p=0.013) and between autumn and winter (p=0.008). However, there was no statistically significant differences between autumn and spring counts (p=0.183). When stratified according to site, this pattern of statistical significance was observed in the right colon but not the left colonic mucosal biopsies. There are significant seasonal variations of eosinophil counts in normal colonic biopsies which are more pronounced in the right colon. Pathologists and gastroenterologists need to be aware of these variations and to take them into account when determining if a patient has tissue eosinophilia.</description><identifier>ISSN: 0126-8635</identifier><identifier>PMID: 37119242</identifier><language>eng</language><publisher>Malaysia: College of Pathologists, Academy of Medicine of Malaysia</publisher><subject>Adolescent ; Adult ; Aged ; Aged, 80 and over ; Biopsy ; Bone marrow ; Colon ; Cross-Sectional Studies ; Eosinophils - pathology ; Female ; Gastroenterology ; Histopathology ; Humans ; Inflammatory bowel disease ; Male ; Middle Aged ; Proteins ; Rectum ; Retrospective Studies ; Seasonal variations ; Seasons ; Young Adult</subject><ispartof>Malaysian journal of pathology, 2023-04, Vol.45 (1), p.11-18</ispartof><rights>Copyright College of Pathologists, Academy of Medicine of Malaysia Apr 2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37119242$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Elshebli, S</creatorcontrib><creatorcontrib>Obeid, J</creatorcontrib><creatorcontrib>Abudalu, L</creatorcontrib><creatorcontrib>Albayati, A</creatorcontrib><creatorcontrib>Abo Osba, M</creatorcontrib><creatorcontrib>Alsadeq, O</creatorcontrib><creatorcontrib>Awad, H</creatorcontrib><title>Seasonal variation of eosinophil counts in histologically normal colonic mucosal biopsies</title><title>Malaysian journal of pathology</title><addtitle>Malays J Pathol</addtitle><description>The eosinophil counts in colonic biopsies are affected by geographical and possibly seasonal variations. This study aims to investigate the significance of seasonal variations of eosinophil counts in histologically normal colonic mucosal biopsies. This is a retrospective, cross sectional study that included 337 cases of normal colonic biopsies. The number of eosinophils per high power field was counted in the most densely populated area. The eosinophilic counts were compared among genders, age groups, biopsy sites and in various months and seasons. Two tailed T-test was used to compare means and a p value &lt; 0.05 was considered significant. 173 (51%) of cases were from males. The age range was between 18-82 with the mean being 51.7 years (SD= 17.5). 181 (54%) biopsies were from the right colon and 156 (46%) from the left colon. There was a statistically significant difference between eosinophil counts in the right colon (mean 20.2, SD 13.2) and left colon (mean 13.8, SD10.1); p value &lt;0.001. The mean eosinophil counts was highest in autumn (21.1) followed by spring (18.3). 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This study aims to investigate the significance of seasonal variations of eosinophil counts in histologically normal colonic mucosal biopsies. This is a retrospective, cross sectional study that included 337 cases of normal colonic biopsies. The number of eosinophils per high power field was counted in the most densely populated area. The eosinophilic counts were compared among genders, age groups, biopsy sites and in various months and seasons. Two tailed T-test was used to compare means and a p value &lt; 0.05 was considered significant. 173 (51%) of cases were from males. The age range was between 18-82 with the mean being 51.7 years (SD= 17.5). 181 (54%) biopsies were from the right colon and 156 (46%) from the left colon. There was a statistically significant difference between eosinophil counts in the right colon (mean 20.2, SD 13.2) and left colon (mean 13.8, SD10.1); p value &lt;0.001. The mean eosinophil counts was highest in autumn (21.1) followed by spring (18.3). 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source MEDLINE; EZB-FREE-00999 freely available EZB journals
subjects Adolescent
Adult
Aged
Aged, 80 and over
Biopsy
Bone marrow
Colon
Cross-Sectional Studies
Eosinophils - pathology
Female
Gastroenterology
Histopathology
Humans
Inflammatory bowel disease
Male
Middle Aged
Proteins
Rectum
Retrospective Studies
Seasonal variations
Seasons
Young Adult
title Seasonal variation of eosinophil counts in histologically normal colonic mucosal biopsies
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