Lateral Lamella of Cribriform Plate (LLCP): A Computed Tomography Radiological Analysis

Abstract

Spectrum of disease involves nasal passage and paranasal sinuses termed as sinonasal disease. CT is superior to other imaging modalities in the assessment of the paranasal sinuses (PNS) pathology. Functional Endoscopic Sinus Surgery (FESS) is the common modality of treatment for diseases of nose and PNS. Coronal CT images closely correlates with the surgical approach. Therefore, CT is the preferred study before FESS. The lateral lamella of cribriform plate (LLCP) is the thinnest bone in the anterior skull base and most vulnerable parts of the skull base for iatrogenic complication during FESS. Therefore, preoperative evaluation of LLCP is importance in a successful FESS. The study focused on the vertical height of the LLCP and the angulation of LLCP with CP. This study was performed retrospectively on CT images of 600 adult subjects. Chi square test and pearson correlation were used for data analysis. Type II is most prevalent type of Kero’s type. There is a significant correlation between Kero’s classification and Gera’s classification. A positive correlation found between the vertical height of LLCP with its angle formed by CP and the correlation was found to be significant. Assessment on LLCP in its 2 aspect both vertical height of LLCP and its sloping with CP certainly gives a map to the surgeon during FESS and to improve the safety profile of the procedure.