Tongue abscess mimicking neoplasia.

Tongue abscess is a very rare condition about which only sparse imaging findings have been reported. In 2 patients, a submucosal malignant tumor was suspected because of the presence of a painful hard tongue mass with intact mucosal surface. Differential diagnosis of the tongue abscess or malignancy was difficult on MR imaging or positron emission tomography-CT. In careful retrospective history taking, the symptoms had dated from an episode of eating fish several months before presentation. Plain radiographs and noncontrast CT images of the pharynx revealed a foreign body within the lesion. Thus, we present the imaging findings of 2 cases of malignancy mimicking tongue abscess as a result of impaction of a fish bone.