Unusual case of unilateral conductive hearing loss: chronic lymphocytic leukaemia.

This presentation reports a novel case of chronic lymphocytic leukaemia (CLL), presenting with an early cutaneous lesion within the external auditory canal, in a patient being assessed for conductive hearing loss. It has previously been reported that infiltrative CLL can involve the head and neck; however, isolated external ear canal involvement is rare. Given that the incidence of CLL in Australia is rising, this case highlights the importance of considering CLL as a differential diagnosis for presentations of unilateral conductive hearing loss. © BMJ Publishing Group Limited 2018. No commercial re-use. See rights and permissions. Published by BMJ.