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Updated: Mar 1, 2026

Intrathecal Application of a Fluorescent Dye for the Identification of Cerebrospinal Fluid Leaks in Cochlear Malformation
Published on: February 29, 2020
Visual and Quantitative Analysis of Cisternography for the Detection of Cerebrospinal Fluid Leakage
Eun Kyoung Choi1, Jin Kyoung Oh1, Sonya Youngju Park2
1Department of Radiology, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Dongsu-ro 56, Bupyung-gu, Incheon, Gyeonggi-do 404-834 Republic of Korea.
Abstract:
We herein present a case of a 29-year-old man with clear rhinorrhea, which persisted for 8 years following a myringotomy. After cotton pledgets were placed in several different regions of the nasal cavity, cisternography using Tc-99m DTPA was performed to measure the radioactivity of each pledget. Cisternography showed subtle uptake in the nasal cavity. However, intense uptake was detected in the pledget placed in the right eustachian tube orifice, where the pledget:serum count ratio was 10.3:1. The patient underwent duroplasty and cranioplasty, and the rhinorrhea resolved.
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