Tornwaldt's (Thornwaldt's) or nasopharyngeal cyst is an uncommon developmental
benign cyst located in the midline postero-superior wall of nasopharynx. Incidence reported in
general population is 0.06%. It occurred in the potential space due to outpouching of ectoderm into
the pharyngobasilar fascia at the site where notochord attached to pharyngeal ectoderm. (Copied from article).
Clival chordoma is a rare primary bone tumour that arises from the remnant of the notochord and typically occurs in older adults. Upon imaging, the tumour can be seen arising from the clivus and causes clival destruction. This usually provides insight for a diagnosis. Here we present a case of a non-enhancing, pre-pontine mass that was hypointense on T1W and hyperintense on T2W in an adolescent. No clival bone erosion was observed. Based on the age group, imaging findings, and lack of clival erosion, a provisional diagnosis of epidermoid cyst was made and the tumour was resected. This patient was eventually diagnosed with a clival chordoma based on histopathological examination.