Portal:Medicine/Did you know/6


 * ...that Erdheim–Chester disease or polyostotic sclerosing histiocytosis is a rare form of non-Langerhans-cell histiocytosis that may present with, among other things, bone pain, retroperitoneal fibrosis, diabetes insipidus and exophthalmos?


 * ...that over time, essentially every vasectomized man experiences an epididymal blowout, which is the formation of a sperm granuloma in the epididymis, to relieve the high intra-luminal pressures in the delicate epididymal tubules?
 * ...that the Rinne test and Weber test are quick screening tests which allow differentiation between conductive hearing loss and sensorineural hearing loss?

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