BACKGROUND AND PURPOSE: Otalgia may be secondary to serious pathology, such as upper aerodigestive tract malignancies, and CT or MR imaging of the skull base, face, and neck is often performed to detect clinically occult lesions. The diagnostic yield, management impact, and therapeutic impact of imaging in this clinical scenario, however, have yet to be elucidated.
MATERIALS AND METHODS:CT and MR imaging in patients who presented with otalgia without clinically overt disease was retrospectively analyzed from a single center over a 9-year period. The cohort was subdivided into groups, depending on the presence of additional symptoms and a history of head and neck cancer. Relevant diagnostic outcome findings were categorized, and the diagnostic yield and impact of imaging on management and therapy were calculated for each group.
RESULTS:In our study cohort of 235 patients, the diagnostic yield of imaging for otalgia, with or without other symptoms, in patients who lacked a history of head and neck cancer was negligible for upper aerodigestive tract malignancy (1%), abnormalities related to otalgia (2%), and other moderate or major findings (2%). Although equivocal or unimportant findings occasionally resulted in additional investigations, the therapeutic impact was also very low (2%). The diagnostic yield for upper aerodigestive tract malignancy (34%) and therapeutic impact increased (34%) when there was a history of head and neck cancer.
CONCLUSIONS:The diagnostic yield and therapeutic impact of imaging for otalgia without clinically overt disease are very low, unless there is a history of head and neck cancer.ABBREVIATIONS: FNE ¼ fibreoptic nasendoscopy; UAT ¼ upper aerodigestive tract T he causes of otalgia (earache) are diverse and can be categorized as primary and secondary. Primary causes of otalgia are pathologies that affect the ear itself, 1 with common causes that include otitis externa, otitis media, 2 trauma, and foreign bodies. Primary otalgia often presents with overt clinical signs and can be managed without imaging studies. Secondary (referred) otalgia is caused by pathologies in locations outside the ear and results from shared pathways of sensory innervation. [1][2][3][4][5][6][7] Some etiologies may also be diagnosed on the basis of additional clinical findings and supported by targeted imaging (eg, temporomandibular joint or dental).Upper aerodigestive tract (UAT) malignancies are a potential cause of secondary otalgia, and it is a clinical feature that prompts rapid referral for head and neck cancer investigation in most clinical networks 8 ; therefore, fiberoptic nasoendoscopy (FNE) is usually performed in the early diagnostic work-up in these patients. Even in the presence of a normal FNE, clinicians may remain concerned that a submucosal UAT lesion or other clinically occult pathology may be present, so cross-sectional imaging is frequently proposed. Despite this common clinical practice, to our knowledge, the diagnostic value of face and neck imaging in patients referred with otalgia has no...