Opioids are substances that act on the nervous system in a similar way to opiates such as morphine and codeine. In a medical context the term usually indicates medications that are artificially made rather than extracted from opium.any of the alkaloids and other derivatives of the opium poppy are not opioids or narcotics; the best example is the smooth-muscle relaxant papaverine. Noscapine is a marginal case as it does have CNS effects but not necessarily similar to morphine, and it is probably in a category all its own.
Modified radical mastectomy This type of mastectomy is usually done to treat invasive cancer that has spread to the lymph nodes. During the mastectomy the breast tissue and a strip of skin with the nipple is removed.
Mastoid operation. A mastoidectomy is a surgical procedure designed to remove infection in the bone behind the ear (mastoid bone). Its purpose is to create a âsafeâ ear and prevent further damage to the hearing apparatus.Mastoidectomy is often indicated for other diseases that spread to the mastoid bone, such as cholesteatoma.Cholesteatoma is an abnormal skin growth in the middle ear behind the eardrum. Repeated infections and/or and a tear or retraction of the eardrum can cause the skin to form an expanding sac. mastoidectomy is a surgical procedure designed to remove infection in the bone behind the ear (mastoid bone). Its purpose is to create a âsafeâ ear and prevent further damage to the hearing apparatus. Mastoidectomy is often indicated for other diseases that spread to the mastoid bone, such as cholesteatoma.