A retrospective review was conducted of material from 782 transrectal ultrasound-guided prostatic core biopsies to determine whether incidental pieces of rectal mucosa obtained in this manner could harbor clinically significant rectal pathology or incur artifacts that cause diagnostic difficulty. Material from 114 biopsies (14.6%) showed rectal mucosa, and material from 19 (16.7%) showed rectal pathology, including a hyper-plastic polyp in 1, changes consistent with ulcerative proctitis in 8, focal active proctitis in 7, and granulomas in 3. The original pathologist overlooked the hyperplastic polyp. In 1 specimen, rectal lymphocytes and plasma cells that were displaced over prostatic tissue closely mimicked prostatic adenocarcinoma (Gleason score 5). Conversely, in another specimen, prostatic adenocarcinoma (Gleason score 5) that was displaced near rectal mucosa closely mimicked a rectal lymphoid aggregate. Incidental rectal mucosa obtained via transrectal ultrasound-guided prostatic core biopsies occasionally harbors clinically significant rectal pathology and rarely incurs artifacts that cause diagnostic difficulty.
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http://dx.doi.org/10.1177/1066896906296002 | DOI Listing |
Histol Histopathol
December 2024
Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.
Sex hormones regulate gut function and mucosal immunity; however, their specific effects on the mucosa-associated lymphoid tissue (MALT) in the rectum of mammals remain unclear. Here, we aimed to investigate the influence of sex on MALT in the rectum of mammals by focusing on the rectal mucosa-associated lymphoid tissues (RMALTs) of C57BL/6NCrSIc mice. Histological analysis revealed that RMALTs were predominantly located in the lamina propria and submucosa of the rectal mucosa, with a significant sex-related difference in the distance from the anorectal junction to the first appearance of the RMALT.
View Article and Find Full Text PDFCurr Med Imaging
January 2025
Department of Nuclear Medicine, Hangzhou Cancer Hospital, Hangzhou 310002, China.
Background: Cytomegalovirus (CMV) infection is common in the digestive and central nervous systems and can infect the entire digestive tract from the mouth to the rectum. In immunocompromised patients, CMV infection is prone to develop into CMV disease, especially in Acquired Immune Deficiency Syndrome (AIDS) patients. Severe cases may accelerate the progression of AIDS patients and form systemic CMV infection.
View Article and Find Full Text PDFPharmaceutics
November 2024
School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China.
: Sodium aescinate (SA) is commonly used topically due to its anti-inflammatory, anti-edematous, and anti-swelling properties. However, the clinical application of SA is limited by strong irritation, and cannot be used on the damaged skin and mucous membrane. This study aimed to investigate whether arginine hydrochloride (Arg·HCl) could reduce the rectal mucosal irritation of SA through the formation of a gel.
View Article and Find Full Text PDFAm J Vet Res
January 2025
Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO.
Objective: To document differences in the microbiota of healthy cats versus cats with urethral obstruction (UO); compare the urinary microbiota with the oral, preputial, and rectal microbiota; and demonstrate that 16S rRNA gene sequencing will reveal rich and diverse urinary microbiota.
Methods: 15 client-owned cats with UO and 15 age-matched healthy cats were included from July 2020 through April 2021. Exclusion criteria were evidence of urinary tract infection, urolithiasis, antimicrobial administration, urinary catheterization in the past 30 days, or a comorbidity.
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