CT scan showing mild impregnation by contrast in the lesion surroundings (arrow). CT scan finds lesion (arrow), showing no involvement of the tympanic membrane and no extension to adjacent structures. Pedicled mass of the left external auditory canal (A: anterior S: superior) CT scan (TC) of temporal bone was carried through, what confirmed the localization of the lesion, the absence of TM involvement and the absence of spreading to other areas, and also mild impregnation by the contrast in the lesion surroundings (Picture 2 and 3). When compressing the mass, transitory auditory improved, but with the increase of the lesion, hearing ability got worse. The lesion virtually occupied all EAC diameters, but it was possible to compress the mass and to observe the tympanic membrane (TM). Through otoscopy, pedicled mass could be seen starting from anteroposterior wall of the internal third of the left EAC (Picture 1). He had previously gone to another service complaining of hearing muffling to the left, being diagnosed with Eustachian tube dysfunction disorder and treated with loratadine and pseudoefedrine, but no success. He did not report ear pain, otorrhea or even previous history of otological disorder. In children, during the proliferative phase, it has been observed that the urine and serum levels of the basic fibroblasts growth factor (bFGF) have increased(1).Ī 41-year-old-male Causasian patient searched for ENT assistance complaining of progressive hearing loss to the left for the past 2 months. Hemangioma can be either capillary type when vessels are organized in capillary structures or cavernous type when presenting large vascular spaces, which is more common in the skin and in the mucosa. Fibrosis, fatty infiltration, cell reduction and number normalization of mastocytes are noticed in the decline stage (2). In histological terms, an endothelial hyperplasia and an increase of mastocytes is noticed in the proliferative stage. They occur in two developmental stages (1): a quick growth stage (proliferative stage), followed by a decline one. It is more common in young children and it progressively disappears before the ages of 5-6 years. Hemangioma is a vascular lesion usually found in the dermis. The differential diagnosis is important in order to determine the correct analysis and proper therapy(3). Vascular lesions are less common and hemangioma is the main one. The benign tumors on this area are a rare process, but its etiological diagnosis is important(1) as the otoscopic findings do not present differences between benign and malignant lesions.Įxostosis is the most found benign tumor of the EAC (6.3 in 1000 patients with ENT complaints)(2). They are usually associated with ear pain, otorrhea and tinnitus, and the main cause is the presence of cerumen, eczema, external otitis and otomycosis. Several diseases can affect the external ear canal (EAC), causing conductive hearing loss.
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