Category: S

A general term applied to failure of fusion of parts along the dorsal midline that may involve any of the following structures: skin, vertebrae, skull, meninges, brain, and spinal cord.  

A strained, strangled, or abnormally breathy voice in a patient with normal laryngeal anatomy. Flexible laryngoscopy reveals laryngeal tremor or spasm during respiration or vocalization. Adductor or abductor muscle spasms may cause the dysfunction. Adductor spasms respond to the injection of botulinum toxin into the thyroarytenoid muscles. Usually, the response lasts several months but provides…

Painful menses that manifest some years after menarche. The diagnosis is strongly suggested by a history or finding of use of an intrauterine device, pelvic inflammatory disease, endometriosis, uterine leiomyomas, adenomyosis, fertility problems related to imperforate hymen, cervical stenosis, ovarian cysts, or pronounced uterine retroflexion and/or retroversion.  

A mobile area of decreased resonance found during percussion of a body part as the body changes position. The finding suggests that fluid is contained within a body cavity and that it moves with gravity.  

Any of the secretory ducts of the sublingual gland.  

One of a class of ducts contained within the lobules of glands, especially salivary glands, that contain radially appearing striations within the cells, denoting the presence of mitochondria.  

The secretory duct of the testicle that later joins the duct of the seminal vesicle to become the ejaculatory duct.  

A drug obtained illegally. A street drug is usually a drug of abuse. A substance obtained from an illicit drug dealer, which can either be a legal substance unlawfully sold without a prescription or intended for non-medical purposes, or it can be an illegal substance prohibited from possession.  

A rolled gauze strip made of a material that adheres to one side of the gauze. It comes in various widths.  

A dose containing not quite enough of a toxin or noxious substance to cause death.