2. Jao SW, Beart RW Jr, Spencer RJ, Reiman HM, Ilstrup DM. Retrorectal tumors: Mayo Clinic experience, 1960-1979. Dis Colon Rectum 1985;28:644–52.
3. Hopper L, Eglinton TW, Wakeman C, Dobbs BR, Dixon L, Frizelle FA. Progress in the management of retrorectal tumours. Colorectal Dis 2016;18:410–7.
4. Toh JW, Morgan M. Management approach and surgical strategies for retrorectal tumours: a systematic review. Colorectal Dis 2016;18:337–50.
7. Hobson KG, Ghaemmaghami V, Roe JP, Goodnight JE, Khatri VP. Tumors of the retrorectal space. Dis Colon Rectum 2005;48:1964–74.
12. Macafee DA, Sagar PM, El-Khoury T, Hyland R. Retrorectal tumours: optimization of surgical approach and outcome. Colorectal Dis 2012;14:1411–7.
14. Bullard Dunn K. Retrorectal tumors. Surg Clin North Am 2010;90:163–71.
15. Kondo T. Retrorectal tumour. Lancet Oncol 2018;19:e654.
16. Dahan H, Arrivé L, Wendum D, Docou le Pointe H, Djouhri H, Tubiana JM. Retrorectal developmental cysts in adults: clinical and radiologic-histopathologic review, differential diagnosis, and treatment. Radiographics 2001;21:575–84.
17. Johnson AR, Ros PR, Hjermstad BM. Tailgut cyst: diagnosis with CT and sonography. AJR Am J Roentgenol 1986;147:1309–11.
18. Glasgow SC, Birnbaum EH, Lowney JK, Fleshman JW, Kodner IJ, Mutch DG, et al. Retrorectal tumors: a diagnostic and therapeutic challenge. Dis Colon Rectum 2005;48:1581–7.
19. Boscà A, Pous S, Artés MJ, Gómez F, Granero Castro P, García-Granero E. Tumours of the retrorectal space: management and outcome of a heterogeneous group of diseases. Colorectal Dis 2012;14:1418–23.
21. Chéreau N, Lefevre JH, Meurette G, Mourra N, Shields C, Parc Y, et al. Surgical resection of retrorectal tumours in adults: long-term results in 47 patients. Colorectal Dis 2013;15:e476–82.
23. Fourney DR, Gokaslan ZL. Current management of sacral chordoma. Neurosurg Focus 2003;15:E9.
24. Bouts C, Van der Speeten K. A single center retrospective analysis of Kraske’s transsacral approach: a review. Surg Sci 2014;5:454–66.
26. Althausen PL, Schneider PD, Bold RJ, Gupta MC, Goodnight JE Jr, Khatri VP. Multimodality management of a giant cell tumor arising in the proximal sacrum: case report. Spine (Phila Pa 1976) 2002;27:E361–5.
27. Freier DT, Stanley JC, Thompson NW. Retrorectal tumors in adults. Surg Gynecol Obstet 1971;132:681–6.
29. Tomita K, Tsuchiya H. Total sacrectomy and reconstruction for huge sacral tumors. Spine (Phila Pa 1976) 1990;15:1223–7.