PMC7452470_01
PMC7452470_02
Coronal CT Image of the skull showing complete opacification with hyperdense fluid content of the left maxillary sinus.
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The severity of the headache increased and persisted for 21 days. Then she went to the ER clinics in our institute, where a second CT was taken by the on-call neurologist that showed complete opacification with hyperdense fluid content of the left maxillary sinus (Fig. 1, Fig. 2).