A diagnosis of endosalphingosis in the pediatric population is extremely rare - in some cases it may coexist with or mimic endometriosis, and hence is missed. On the other hand, its close relationship with the development of serous tumors is an issue that needs attention. Histopathology confirms the diagnosis. Surgery is the mainstay of management and medical therapy is for symptom relief. We present a case of endosalpingiosis presenting in an unusual age group, in a new location, and describe the benefit of using off-label colchicine for adjuvant therapy.
 Prentice L, Stewart A, Mohiuddin S, et al. What is endosalpingiosis? Fertil Steril. 2012;98(4):942-47.
 Ong NCS, Maher PJ, Pyman JM, et al. Endosalpingiosis, an unrecognized condition: report and literature review. Gynecol Surg. 2004;1:11-14.
 https://www.uptodate.com/contents/endosa lpingiosis (Access date: April 2019).
 Min Hou, Lipai Chen, Jingping Yun. Facts about Endosalpingiosis. Open J Obstet Gynecol. 2015;5(10):523-27.
 Zangmo R, Singh N, Kumar S, et al. Second Look of Endosalpingiosis: A Rare Entity. J Obstet Gynaecol India. 2017;67(4):299– 301.
 Heerema AE, Laufer MR, Barbieri RL. Endosalpingiosis: Description of presentation and follow up. J Pediatr Adolesc Gynecol. 1996;9(3):150.
 McCluggage WG, Clements WD. Endosalpingiosis of the colon and appendix. Histopathology. 2001;39(6):645-46.
 Stolnicu S, Preda O, Kinga S, et al. Florid, papillary endosalpingiosis of the axillary lymph nodes. Breast J. 2011;17(3):268-72.
 Tanahashi J, Kashima K, Daa T, et al. Florid cystic endosalpingiosis of the spleen. APMIS. 2006;114(5):393-98.
 Cajigas A, Axiotis CA. Endosalpingiosis of the vermiform appendix. Int J Gynecol Pathol. 1990;9(3):291-95.
 Leung YY, Yao Hui LL, Kraus VB. Colchicine--Update on mechanisms of action and therapeutic uses. Semin Arthritis Rheum. 2015;45(3):341–50.
 Solak A, Solak İ. Abdominal cocoon syndrome: preoperative diagnostic criteria, good clinical outcome with medical treatment and review of the literature. Turk J Gastroenterol. 2012;23(6):776-9.