| POF | pattern of failure; position of function; premature ovarian failure; primary ovarian failure; pyruva... |
|---|---|
| PSF | peak scatter factor; peptide supply factor; point spread function; pseudosarcomatous fasciitis |
| y | Greek letter psi; wave function |
| QENF | quantifying examination of neurologic function |
| RFS | relapse-free survival; renal function study; rotating frame spectroscopy |
| liver spot | A variably pigmented lentigo occurring on exposed skin of older Caucasians. Synonym: liver spot, solar lentigo. (05 Mar 2000) |
|---|---|
| liver spots | A skin disorder seen with aging (or sun exposure) where there are flat patches of increased pigmentation on the skin. They are nonserious, benign and generally more important cosmetically. The most commonly appear on sun exposed areas such as the forehead and the back of the hands. Avoidance of the sun and the use of a sunscreen (SPF of 15) can reduce the incidence of these lesions. Creams and lotions are available which bleach the skin. Cryotherapy can be used in some cases. (27 Sep 1997) |
| liver starch | <biochemistry> Branched polymer of D glucose (mostly _(1-4) linked, but some _(1-6) at branch points). Size range very variable, up to 10exp5 glucose units. Major short term storage polymer of animal cells and is particularly abundant in the liver and to a lesser extent in muscle. In the electron microscope glycogen has a characteristic asterisk or star appearance. (18 Nov 1997) |
| liver transplant | <procedure, surgery> Surgery to replace a disease liver with a healthy one from a donor. This procedure is technically quite difficult, since both vessels and biliary tract must be reattached to the new liver. most often indicated in those with long-term chronic hepatitis or congenital liver defects. Not usually performed in the situation of alcoholic cirrhosis or primary biliary cirrhosis. (14 Oct 1997) |
| liver transplantation | The transference of a part of or an entire liver from one human or animal to another. (12 Dec 1998) |