spontaneous csf otorrhea masquerading as middle ear effusion: a case report

Spontaneous cerebrospinal fluid (csf) otorrhea is a rare but important differential diagnosis in cases of persistent middle ear effusion. we report a case of a 45-yearold female who presented with persistent aural fullness and hearing loss in the right ear immediately following an airplane flight. she was initially diagnosed with middle ear effusion and underwent myringotomy with grommet ventilation tube insertion. however, the patient continued to experience profuse watery otorrhea for two months postoperatively. subsequent computed tomography of the temporal bone confirmed a csf leak from a defect in the tegmen tympani near the anterior epitympanum. the patient underwent successful endoscopic csf otorrhea repair under general anaesthesia. three months postoperatively, the patient's hearing improved, and her aural symptoms resolved. this case highlights the importance of considering spontaneous csf leaks in cases of sudden-onset conductive hearing loss, even in the absence of trauma or prior surgical history.