Educational Case #50: Ulcer and Fistula Formation Following Neurolytic Ganglion Impar Block by Dr Mohammad Risiq, Dr Bayan Abu-Khalil, Dr Mohammad Al Zarir and Dr Taghreed Abuirshaid

Published: 28/10/2025

References

[1] Li K, Hao D. Transsacrococcygeal ganglion impar block. 2025; 4(2). doi.org/10.1016/j.inpm.2025.100595

[2] Ferreira F, Pedro A. Ganglion Impar Neurolysis in the Management of Pelvic and Perineal Cancer Related Pain. Case Rep Oncol. 2020;13(1):29-34. doi: 10.1159/000505181.

[3] Gupta N, Garg R, Saini S, Bharti SJ, Kumar V. An Unusual Complication After Ganglion Impar Block for Chronic Cancer Pain Management. AANA J. 2017;85(6):424-426. PMID: 31573500

[4] Asmaranto, Susila D. Ganglion Impar Block and Neurolysis for Perineal Pain in Anal Adenocarcinoma: A Case Report. Pharmacognosy Journal. 2024,16(3),711-715, DOI:10.5530/pj.2024.16.120

[5] Benzon HT, Khan F. Complications Associated with Neurolytic Blocks. In: Neal JM, Rathmell JP. Complications in Regional Anesthesia and Pain Medicine (2^nd edition). Philadelphia, Lippincott Williams & Wilkins, 2013.

[6] Olgun Y, Sencan S, Unver S, Osmanli N, Kokar S, Gunduz OH. Chronic Coccygodynia and ganglion impar block: How does contrast material distribution affect treatment outcomes? Pain Pract. 2025;25:e70024. doi:10.1111/papr.70024

Additionally see Recommended Reading for October 2025 here.