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Τρίτη 7 Σεπτεμβρίου 2021

Application of different imaging methods for the localization of cerebrospinal fluid rhinorrhea: a comparative study

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Ann Palliat Med. 2021 Aug;10(8):8797-8807. doi: 10.21037/apm-21-1994.

ABSTRACT

BACKGROUND: CSF rhinorrhea is a type of CSF leakage caused by an aseptic abnormal passage between the subarachnoid space and the adjacent sinus and nasal cavity due to a cranial dural defect. At present, the value of computed tomography cisternography (CTC) in locating CSF rhinorrhea has been widely recognized, and magnetic resonance hydrography (MRH), as a heavy T2-weighted water imaging, plays a pivotal role in showing the location of the leak. In this paper, we retrospectively summarize the imaging manifestations seen at our hospital of patients with clinically confirmed CSF rhinorrhea at the skull base and evaluate the diagnostic value of different imaging methods in the localization of CSF rhinorrhea by means of preoperative imaging analysis using CTC and MRH.

METHODS: Fifty-five patients with CSF rhinorrhea admitted to our department from October 2016 t o January 2021 were retrospectively analyzed. The patients' conventional CT, CTC, and MRH imaging data were compared, and the location of the leak determined preoperatively matched the location of the leak found during surgery. Moreover, there was no recurrence during the follow-up period of 4 months to 3 years.

RESULTS: There were statistically significant differences between the diagnostic positivity rate of CTC and spiral CT (χ2=16.755, P<0.00), and between the diagnostic positivity rate of cranial MRH and spiral CT (χ2=6.338, 6.338=0.01), and no statistically significant difference between the diagnostic positivity rate of CTC and cranial MRH (χ2=2.625, P=0.1).

CONCLUSIONS: The combined use of imaging techniques has important practical significance for the proper treatment and prognostic evaluation of CSF rhinorrhea. CTC has the highest positive rate for the diagnosis of CSF rhinorrhea, followed by MRH, while spiral CT is safer. CTC and MRH can promote the diag nostic rate in determining the location of CSF rhinorrhea, and selective combined application can be an important guide to surgery.

PMID:34488368 | DOI:10.21037/apm-21-1994

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