External auditory canal osteoma
Known acute myeloid leukaemia with planned bone marrow transplantation (BMT).
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Solitary pedunculated bony density lesion contiguous with the wall of the right external auditory canal (EAC) at the junction between the cartilaginous and bony portions of the EAC. Partial opacification, likely ceruminous secretions, within the EAC, and a small amount of non-specific fluid in the middle ear cleft.
There is also abnormal bone density as a feature of acute myeloid leukemia.
The left temporal bone, including the EAC, is unremarkable.
Polypoid mucosal thickening arising from the floor of the left maxillary antrum. Evidence of right maxillary acute sinusitis.
External auditory canal osteoma presenting as a solitary and unilateral bony growth, in contradistinction to external auditory canal exostoses (a.k.a. surfer's ear) which present as multiple and bilateral bony growths.