The clinical presentation and otoscopic and radiologic findings are nonspecific. [ncbi.nlm.nih.gov]

[…] sheets, solid, trabecular, cystic, cribriform, glandular, NOT papillary) of glands or tubules composed of uniform single layer of cuboidal or columnar cells with variable eosinophilic cytoplasm and round/oval hyperchromatic nuclei, eccentric nucleoli (if present [pathologyoutlines.com]

[…] year old man and 34 year old woman with carcinoid tumors of the middle ear (Am J Clin Pathol 1987;87:592) 27 year old man and 42 year old woman with middle ear adenoma (J Clin Pathol 1991;44:652) 63 year old woman with 1 cm middle ear mass (Case #376) Treatment [pathologyoutlines.com]

[…] tumors No gender preference, usually 20's to 40's, but wide age range Affects all sites in middle ear Occasionally perforates tympanic membrane and extends into external auditory canal Not associated with chronic otitis media or cholesteatoma Excellent prognosis [pathologyoutlines.com]