Publication Name	World Journal of Clinical Pediatrics
Manuscript ID	119251
Country	Thailand

Category	Gastroenterology & Hepatology
Manuscript Type	Prospective Study
Article Title	Rectal diameter measured by transabdominal ultrasonography for monitoring treatment response in children with functional constipation
Manuscript Source	Invited Manuscript
All Author List	Duc Long Tran, Nitikarn Pinyoying and Palittiya Sintusek
Funding Agency and Grant Number	Funding Agency Grant Number Chulalongkorn University the Second Century Fund C2F Thailand Science Research and Innovation Fund Chulalongkorn University HEA_FF_69_225_3000_031
Corresponding Author	Palittiya Sintusek, Associate Professor, MD, PhD, Center of Excellence in Thai Pediatric Gastroenterology, Hepatology and Immunology, Division of Gastroenterology, Department of Pediatrics, King Chulalongkorn Memorial Hospital, Faculty of Medicine, Chulalongkorn University, 1873 Rama IV, Pathumwan, Bangkok 10330, Thailand. palittiya.s@chula.ac.th
Key Words	Constipation; Rectal diameter; Ultrasonography; Children; Anterior wall thickness
Core Tip	Although transabdominal ultrasonography (USG) has been increasingly employed to assess fecal impaction in children with functional constipation (FC), evidence supporting its role in monitoring treatment responses remains limited. In this prospective substudy of a randomized controlled trial evaluating the efficacy of commercial polyethylene glycol (PEG) and PEG-Chula, USG-measured rectal diameter (RD) exhibited a significant decrease after 8 weeks of treatment, paralleling clinical improvement. In contrast, anterior rectal wall thickness did not change significantly during treatment. These findings indicate that USG-measured RD may be a practical, noninvasive parameter for monitoring treatment response in children with FC.
Citation	Tran DL, Pinyoying N, Sintusek P. Rectal diameter measured by transabdominal ultrasonography for monitoring treatment response in children with functional constipation. World J Clin Pediatr 2026; In press

Received	2026-01-26 01:49
Peer-Review Started	2026-01-26 01:50
First Decision by Editorial Office Director	2026-02-03 09:44
Return for Revision	2026-02-03 09:44
Revised	2026-02-06 09:01
Publication Fee Transferred
Second Decision by Editor	2026-03-06 02:34
Second Decision by Editor-in-Chief
Final Decision by Editorial Office Director	2026-03-06 07:27
Articles in Press	2026-03-06 07:27
Edit the Manuscript by Language Editor
Typeset the Manuscript

ISSN	2219-2808 (online)
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