PMC4663314_01
CT imaging depicting otitis media of the left ear with external ear canal obstruction (*) due to the cystic lesion.
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fig1
CT scan of the temporal bone showed a cystic lesion on the inferior cartilaginous part of the EAC but no temporal bone lysis; the middle ear appeared to contain fluid and swelling of the parotid gland and cervical lymph nodes bilaterally were also seen (Figure 1).
H/E x40. The tumor is made of tubular and cystic structures.
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The inner ones consisted of middle-sized cylindrical or cuboidal cells with an eosinophilic cytoplasm and round nuclei, arranged in tubules (Figure 2).
H/E x100. Two cystic-tubular formations lined by columnar cells with an eosinophilic cytoplasm are seen.
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fig3
Based on these histopathological and immunohistochemical findings the diagnosis of ceruminous gland adenoma was established (Figures 3 -5).
Immunostain for keratin 7 (x100): luminal cells are labelled.
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Based on these histopathological and immunohistochemical findings the diagnosis of ceruminous gland adenoma was established (Figures 3 -5).
Immunostain for p63 protein (x100): nuclear positivity is seen in basal cells.
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fig5
Based on these histopathological and immunohistochemical findings the diagnosis of ceruminous gland adenoma was established (Figures 3 -5).