title: Rare case of an abdominal mass: Reactive nodular fibrous pseudotumor of the stomach encroaching on multiple abdominal organs.
abstract: Reactive nodular fibrous pseudotumor (RNFP), which presents abdominal clinical manifestations and malignant radiographic results, usually requires radical resection as the treatment. However, RNFP has been recently described as an extremely rare benign post-inflammatory lesion of a reactive nature, which typically arises from the sub-serosal layer of the digestive tract or within the surrounding mesentery in association with local injury or inflammation. In addition, a postoperative diagnosis is necessary to differentiate it from the other reactive processes of the abdomen. Furthermore, RNFP shows a good prognosis without signs of recurrence or metastasis. A 16-year-old girl presented with a 3-mo history of epigastric discomfort, and auxiliary examinations suggested a malignant tumor originating from the stomach; postoperative pathology confirmed RNFP, and after a 2-year follow-up period, the patient did not display any signs of recurrence. This case highlights the importance of preoperative pathology for surgeons who may encounter similar cases.
authors.affiliation: Xiao-Jiang Yi, Chuang-Qi Chen, Yin Li, Jin-Ping Ma, Shi-Rong Cai, Yu-Long He, Department of Gastrointestinal Surgery and Colorectal Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
authors.forename: Xiao-Jiang
authors.initials: XJ
authors.lastname: Yi
authors.affiliation: Xiao-Jiang Yi, Chuang-Qi Chen, Yin Li, Jin-Ping Ma, Shi-Rong Cai, Yu-Long He, Department of Gastrointestinal Surgery and Colorectal Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
authors.forename: Chuang-Qi
authors.initials: CQ
authors.lastname: Chen
authors.affiliation: Xiao-Jiang Yi, Chuang-Qi Chen, Yin Li, Jin-Ping Ma, Shi-Rong Cai, Yu-Long He, Department of Gastrointestinal Surgery and Colorectal Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Li
authors.affiliation: Xiao-Jiang Yi, Chuang-Qi Chen, Yin Li, Jin-Ping Ma, Shi-Rong Cai, Yu-Long He, Department of Gastrointestinal Surgery and Colorectal Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
authors.forename: Jin-Ping
authors.initials: JP
authors.lastname: Ma
authors.affiliation: Xiao-Jiang Yi, Chuang-Qi Chen, Yin Li, Jin-Ping Ma, Shi-Rong Cai, Yu-Long He, Department of Gastrointestinal Surgery and Colorectal Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
authors.forename: Zhi-Xun
authors.initials: ZX
authors.lastname: Li
authors.affiliation: Xiao-Jiang Yi, Chuang-Qi Chen, Yin Li, Jin-Ping Ma, Shi-Rong Cai, Yu-Long He, Department of Gastrointestinal Surgery and Colorectal Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
authors.forename: Shi-Rong
authors.initials: SR
authors.lastname: Cai
authors.affiliation: Xiao-Jiang Yi, Chuang-Qi Chen, Yin Li, Jin-Ping Ma, Shi-Rong Cai, Yu-Long He, Department of Gastrointestinal Surgery and Colorectal Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
authors.forename: Yu-Long
authors.initials: YL
authors.lastname: He
keywords: Digestive tract; Good prognosis; Mesentery; Post-inflammatory lesion; Reactive nodular fibrous pseudotumor
references.citation: Am Surg. 2012 May;78(5):E262-4
references.pmid: 22691322
references.citation: Am J Surg Pathol. 2004 Mar;28(3):416; author reply 417
references.pmid: 15104309
references.citation: Am Surg. 2011 Jun;77(6):790-1
references.pmid: 21679652
references.citation: Am J Surg Pathol. 2003 Apr;27(4):532-40
references.pmid: 12657940
references.citation: J Pediatr Surg. 2012 Apr;47(4):795-8
references.pmid: 22498399
references.citation: Gastroenterol Clin Biol. 2009 Dec;33(12):1076-81
references.pmid: 19762186
references.citation: Am J Surg Pathol. 2004 Feb;28(2):276-7
references.pmid: 15043323
references.citation: Virchows Arch. 2005 Nov;447(5):879-82
references.pmid: 16021510
references.citation: Int J Surg Pathol. 2004 Oct;12(4):365-74
references.pmid: 15494862