X-linked mixed deafness with perilymphatic gusher, also known as X-linked deafness type 2, is a rare form of non-syndromic genetic deafnesss affecting males and characterized by pathognomonic inner ear anomalies and conductive and profound sensorineural hearing loss. The inner ear anomalies are described as dilatation of the internal auditory meatus and fistulous connection between the cochlear basal turn and internal auditory canal resulting in perilympatic gusher on attempted mobilization of a fixed stapes. Obligate female carriers may suffer from mild to moderate hearing loss.
Synonyms:
exact_synonym:
DFNX2; X-linked mixed conductive and neurosensory hearing loss; X-linked mixed conductive and sensorineural hearing loss; X-linked stapes gusher syndrome
narrow_synonym:
Nance deafness; X-linked deafness type 2; X-linked mixed conductive and neurosensory deafness; X-linked mixed conductive and sensorineural deafness; X-linked mixed deafness with perilymphatic gusher; deafness, X-linked 2, X-linked recessive
broad_synonym:
central hearing loss; high frequency deafness; high frequency hearing loss; perceptive deafness; perceptive hearing loss; perceptive hearing loss or deafness; sensorineural deafness; sensorineural hearing loss; sensory hearing loss
related_synonym:
DFN 3 nonsyndromic hearing loss and deafness; DFN3; deafness 3 conductive with stapes fixation; deafness conductive with stapes fixation; deafness mixed with perilymphatic gusher; deafness, X-linked 2; gusher syndrome; perilymphatic gusher-deafness syndrome; sensorineural deafness, profound, with or without a conductive component, associated with a unique developmental Abnormality of the Ear