Introduction

The floor of the mouth (FOM) is located below the tongue in the oral cavity. Many diseases can occur in the FOM that are unique to this anatomical location. Clinical examination of the mucosal surface of the FOM is easy without imaging, because the superficial pathologies can be assessed by the bare eye. However, if the disease has a deep extension into the FOM or spreads beyond its boundaries, imaging may then be necessary. Different imaging modalities can be helpful in examining the FOM.(1)

Diagnosis of lesions in the FOM can be challenging diagnosis asvarious pathologiescan occur in this area. The FOM has different tissue types and specialized anatomical structures , this explains the occurrence of various systemic and local pathologies in this area.(2)

The aim of this work is to assess the role of CT in assessing lesions of the floor of the mouth with complementary US or MRI if needed.

Patients

The study was carried out on 26 patients referred to the Radio-diagnosis department at Alexandria Main University Hospital diagnosed with floor of mouth lesions during the time period December 2018 to September 2020.

It included patients with lesions extending into the floor of mouth and excluded those with poor renal function, those who are allergic to contrast media, patients with lesions limited to the tongue and those with unstable general