A case of chronic mastoid infestation by a rare parasite (Poikilorchis congolensis).
D002908:Chronic Disease; D003560:Cysts; D003638:Deafness / Q000209:etiology; D005260:Female; D006801:Humans; D008416:Mastoid / Q000473:pathology*; D008875:Middle Aged; D014200:Trematoda / Q000302:isolation & purification; D014201:Trematode Infections / Q000209:etiology / Q000473:pathology*