Published on: 5/6/2025
Swelling on the right side of the lower abdomen can result from several causes including complications of appendicitis (such as an abscess or fistula), an appendiceal mucocele, an ovarian cyst rupture or torsion, abdominal wall endometriosis, enlarged mesenteric lymph nodes, or, in rare cases, conditions like neuronal intestinal dysplasia.
There are a number of potential explanations for swelling in the right lower abdomen:
Because these causes differ greatly in severity and management, it is important to seek evaluation from a healthcare provider. They can carry out a physical examination, recommend appropriate imaging studies, and perform further diagnostic tests to determine the exact cause of the swelling and to guide necessary treatment.
(References)
Kauffman ZS, Stuart DL. Uncommon Presentation of Perforated Appendicitis: Abdominal Wall Abscess and Fistula Formation. Am J Case Rep. 2025 Mar 18;26:e946543. doi: 10.12659/AJCR.946543. PMID: 40100784; PMCID: PMC11928066.
Gortchev G, Tomov S, Dimitrov D, Nanev V, Betova T. Appendiceal mucocele presenting as a right adnexal mass: a case report. Obstet Gynecol Int. 2010;2010:281053. doi: 10.1155/2010/281053. Epub 2010 Sep 13. PMID: 20871809; PMCID: PMC2943109.
Wu TK, Wu AS, Tran TA, Lee CY. Neuronal intestinal dysplasia presenting as an abdominal mass: report of a case. Dis Colon Rectum. 1997 Jul;40(7):862-5. doi: 10.1007/BF02055447. PMID: 9221867.
Yang E, Chen GD, Liao YH. Spontaneous abdominal wall endometriosis: A Case Report and review of the literature. Taiwan J Obstet Gynecol. 2023 Jan;62(1):155-157. doi: 10.1016/j.tjog.2022.07.009. PMID: 36720530.
Lucey BC, Stuhlfaut JW, Soto JA. Mesenteric lymph nodes seen at imaging: causes and significance. Radiographics. 2005 Mar-Apr;25(2):351-65. doi: 10.1148/rg.252045108. PMID: 15798054.
We would love to help them too.
For First Time Users
We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.
Purpose and positioning of servicesUbie Doctor’s Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.