Gartner’s Duct Cysts: From 1 Different Sources
vaginal cysts, usually small, that arise from Gartner’s duct – remnants of the Wolffian duct (see mesonephros) in females. No treatment is necessary if the cysts are small and not symptomatic, but surgical *marsupialization or excision may be required if they are large and cause obstruction. [H. T. Gartner (1785–1827), Danish surgeon and anatomist]
The name applied to a passage leading from a gland into some hollow organ, or on to the surface of the body, by which the secretion of the gland is discharged: for example, the pancreatic duct and the bile duct opening into the duodenum, and the sweat ducts opening on the skin surface.... duct
A duct that goes through the nasolacrimal canal in the palatine bone of the SKULL. The duct drains the tears from the lacrimal (tear) glands into the NOSE.... nasolacrimal duct
This is the bodies’ main lymph collecting vessel. It starts in the little collecting bladder in the abdomen (the cisterna chyli), moves up the center of the body in front of the spinal chord, alongside the esophagus and aorta to the neck, where it drains into the left subclavian vein. It drains the lymph from the entire body, except the head, right thorax and arm, which collects lymph separately and drains into the right subclavian vein. Lacking the ability to contract and expand, the thoracic duct relies on its valves and the kinetic energy of breathing and nearby arterial pumping to drain lymph upwards.... thoracic duct
The channel running from the gall-bladder (see LIVER) to the DUODENUM; carries BILE.... bile duct
The tube that runs from the gall-bladder (see LIVER) and joins up with the hepatic duct (formed from the bile ducts) to form the common BILE DUCT. The BILE produced by the liver cells is drained through this system and enters the small intestine to help in the digestion of food.... cystic duct
Hollow tumours (see TUMOUR), containing ?uid or soft material. They are almost always simple in nature.
Retention cysts In these, in consequence of irritation or another cause, some cavity which ought naturally to contain a little ?uid becomes distended, or the natural outlet from the cavity becomes blocked. Wens are caused by the blockage of the outlet from sebaceous glands in the skin, so that an accumulation of fatty matter takes place. RANULA is a clear swelling under the tongue, due to a collection of saliva in consequence of an obstruction to a salivary duct. Cysts in the breasts are, in many cases, the result of blockage in milk ducts, due to in?ammation; they should be assessed to exclude cancer (see BREASTS, DISEASES OF). Cysts also form in the kidney as a result of obstruction to the free out?ow of the urine.
Developmental cysts Of these, the most important are the huge cysts that originate in the OVARIES. The cause is doubtful, but the cyst probably begins at a very early period of life, gradually enlarges, and buds o? smaller cysts from its wall. The contents are usually a clear gelatinous ?uid. Very often both ovaries are affected, and the cysts may slowly reach a great size – often, however, taking a lifetime to do so.
A similar condition sometimes occurs in the KIDNEYS, and the tumour may have reached a great size in an infant even before birth (congenital cystic kidney).
Dermoid cysts are small cavities, which also originate probably early in life, but do not reach any great size until fairly late in life. They appear about parts of the body where clefts occur in the embryo and close up before birth, such as the corner of the eyes, the side of the neck, and the middle line of the body. They contain hair, fatty matter, fragments of bone, scraps of skin, even numerous teeth.
Hydatid cysts are produced in many organs, particularly in the liver, by a parasite which is the larval stage of a tapeworm found in dogs. They occur in people who keep dogs and allow them to contaminate their food. (See TAENIASIS.)... cysts
(scala media) see cochlea.... cochlear duct
a blind-ended duct that leads from the sacculus and joins a duct from the utriculus of the membranous *labyrinth of the ear.... endolymphatic duct
see bile duct.... hepatic duct
see Müllerian duct.... paramesonephric duct
the long secretory duct of the *parotid salivary gland. [N. Stensen (1838–86), Danish physician]... stensen’s duct
the secretory duct of the submandibular *salivary gland. [T. Wharton (1614–73), English physician]... wharton’s duct
see mesonephros.... wolffian duct
(paramesonephric duct) either of the paired ducts that form adjacent to the Wolffian ducts (see mesonephros) in the embryo. In the female these ducts develop into the Fallopian tubes, uterus, and part of the vagina. In the male anti-Müllerian hormone (AMH), produced by the fetal testis, arrests their development and by the tenth week of fetal life they have degenerated almost completely. In females AMH is produced by the ovary and levels are used as a measure of certain aspects of ovarian function, such as response to in vitro fertilization and assessing such conditions as polycystic ovary syndrome, premature ovarian failure, and intersex conditions in infants. [J. P. Müller (1801–58), German physiologist]... müllerian duct
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