Acoustic neuroma (vestibular schwannoma) – benign neoplasm of Schwann cells affecting the vestibulocochlear nerve
Meningioma – benign tumour of the pia and arachnoid mater
Ménières disease – causes sensorineural hearing loss in the low frequency range (125 Hz to 1000 Hz). Ménières disease is characterized by sudden attacks of vertigo, lasting minutes to hours preceded by tinnitus, aural fullness, and fluctuating hearing loss. It is relatively rare and commonly over diagnosed. Bacterial meningitis e.g. pneumococcal, meningococcal, haemophilus influenzae may damage the cochlea – Hearing loss is one of the most common after-effects of bacterial meningitis. It has been estimated that 30% of bacterial meningitis cases result in mild to profound hearing loss. Children are most at risk: seventy percent of all bacterial meningitis occurs in young children under the age of five. Viral
AIDS and ARC patients frequently experience auditory system anomalies. Mumps(epidemic parotitis) may result in profound sensorineural hearing loss (90 dB or more), unilaterally (one ear) or bilaterally (both ears). Measles may result in auditory nerve damage but more commonly gives a mixed (sensorineural plus conductive) hearing loss, and can be bilaterally. Ramsay Hunt syndrome type II (herpes zoster oticus)
Bacterial
Syphilis is commonly transmitted from pregnant women to their fetuses, and about a third of the infected children will eventually become deaf. Ototoxic and neurotoxic drugs and chemicals
Some over-the-counter as well as prescription drugs and certain industrial chemicals are ototoxic. Exposure to these can result in temporary or permanent hearing loss. Some medications cause irreversible damage to the ear, and are limited in their use for this reason.
Elective right hemicolectomy may be used to prevent recurrence but is generally not recommended"...The authors have found nonoperative treatment highly effective in patients who do not manifest signs of peritonitis, perforation, gastrointestinal hemorrhage, or clinical deterioration. Recurrent typhlitis was frequent after conservative therapy (recurrence rate, 67 percent), however," as based on studies from the 1980s

Prognosis
Inflammation can spread to other parts of the gut in patients with typhlitis. The condition can also cause the cecum to become distended and can cut off its blood supply. This and other factors can result in necrosis and perforation of the bowel, which can cause peritonitis and sepsis.Historically, the mortality rate for typhlitis was as high as 50%, mostly because it is frequently associated with bowel perforation. More recent studies have demonstrated better outcomes with prompt medical management, generally with resolution of symptoms with neutrophil recovery without death 
. See also
Colitis

References


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