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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