What's the difference between atheroma and atherosis?
Atheroma
Definition:
(n.) An encysted tumor containing curdy matter.
(n.) A disease characterized by thickening and fatty degeneration of the inner coat of the arteries.
Example Sentences:
(1) An atheroma is often associated with saccular aneurysms, but its effect on this pathological process is still unknown.
(2) The usefulness of the serotonin (5-HT2) antagonist ketanserin in the treatment of hypertension is evaluated with respect to its known antihypertensive property as well as in relation to its effect on hypertension-induced cardiovascular changes, platelet hyperreactivity, and atheroma formation.
(3) Intracoronary imaging after balloon angioplasty reveals that a significant amount of atheroma is still present, which may partly explain why the incidence of restenosis is high after percutaneous transluminal coronary angioplasty.
(4) Two young women with homozygous familial hypercholesterolaemia and coronary and aortic atheroma were treated by repeated plasma exchange, using a continuous-flow blood-cell separator, for 4 and 8 months.
(5) The specific labelling of atheroma involves mainly protoporphyrin, hematoporphyrin and also minor components of Photofrin II which are accumulated.
(6) Between 1984 and 1989, 29 iliac renal artery bypasses were performed in 29 patients (mean age 67.8 years) with severe renovascular disease due to atheroma.
(7) The atherosclerotic plaques in the venous grafts resembled those in the coronary arteries, the main difference being the occurrence of multiple atheromas (up to 4 in a single section), the high number of T lymphocytes and macrophages related to these sites and the presence of atheromas bordering directly onto the luminal surface.
(8) He subsequently suffered from mesenteric angina due to stenosis of the origin of the superior mesenteric artery and intermittent claudication due to aorto-iliac atheroma.
(9) These results, when taken together with previous data demonstrating that PB increases serum triglyceride in the rabbit but lowers it in the rat, suggest that the drug may be atherogenic in the rabbit but not in the rat which, in any case, is highly resistant to atheroma.
(10) The nature of graft occlusion is related to immediate failure, usually technical, early failure due to myo-intimal hyperplasia and late failure due to progression of atheroma.
(11) 36 patients had no detectable atheroma, 23 mild, 21 moderate, and 36 severe.
(12) The results showed that the bare tip produced the most effective ablation in arterial atheroma, followed by the metal probe and the spectraprobe.
(13) In the remaining 16 patients, who had severe atheroma, PTA was made necessary by ischaemic renal failure.
(14) By comparing these findings with those observed in three other cases, in which biopsy of the pulp of the toe was also performed, the hypothesis can be advanced that these juvenile encephalic ischemic accidents are caused by atheroma, which can be detected, at an early stage, by studying the distal arteries in the finger or toe pulp.
(15) In this altered phenotype the smooth muscle cells proliferate in response to mitogens, synthesize large amounts of extracellular matrix and accumulate lipid, all characteristics of the smooth muscle cell in developing atheroma.
(16) The spectrum ranged from removal of atheroma to subtotal gastric resection.
(17) Cardiac ultrafast computed tomography showed that one half of the patients (21 of 40) had coronary artery calcification, indicating a high incidence of coronary atheroma in this patient population.
(18) Changes in atheroma volume are measured in repeat arteriographic examinations.
(19) Laser angioplasty is used to vaporize atheroma in limb arteries.
(20) The agar model needs further study to determine its limitations, but agar seems to be a useful substitute for atheroma in the study of laser catheter angioplasty.
Atherosis
Definition:
Example Sentences:
(1) In the membrane rolls and in a portion of placental bed biopsies from preeclampsic patients there was no acute atherosis in the spiral arteries.
(2) The presence of granular deposits of immunoglobulins and complement within the vessel walls with acute atherosis may be related to an immunological disorder, probably mediated by immune complexes.
(3) Several pregnancy disorders, including pre-eclampsia and intrauterine growth retardation, may be due to abnormal maternofetal cellular relationships within the placental bed causing inadequate invasion of spiral arteries and acute atherosis.
(4) Atherosis generally rarely causes clinical symptoms and, furthermore, is reversible by lowering of LDL-C.
(5) Histological examination separated the patients into four groups: comprising 11 whose vessels showed normal physiological changes, 20 who showed inadequate physiological change, 12 with acute atherosis, and four with a mixed pattern.
(6) Fetal outcome was only marginally worse in the preeclamptic patients who developed acute atherosis.
(7) Reversal of atherosis has been observed in all the major species used in atherosclerosis research; rabbits, swine, dogs, chicks, pigeons, and subhuman primates.
(8) Acute atherosis is a maternal vascular lesion observed regularly in cases of pre-eclampsia and idiopathic intrauterine growth retardation.
(9) This suggests that multiple risk factors influence lesions, and risk profile differs according to atherosis site.
(10) When essential hypertension is complicated by preeclampsia, the placental bed arteries show a combination of hyperplastic arteriosclerosis and acute atherosis.
(11) Other features seen predominantly or only in the hypertensive biopsies, in order of frequency, were medial hyperplasia, fibrin deposits, acute atherosis, endothelial vacuolation and thrombosis.
(12) Any maternal uterine vessel that had not undergone physiologic vascular changes could be affected by acute atherosis.
(13) Acute atherosis of the myometrial segments of the uteroplacental arteries from pre-eclamptic pregnancies was studied by electron microscopy.
(14) There was no relation between these changes and maternal age, parity, race or smoking habit, but no physiological change and atherosis were more common in association with maternal hypertension.
(15) Immunohistochemical studies often reveal extensive vascular deposition of IgM and complement in acute atherosis-like lesions.
(16) Future studies of atherosclerosis reversal should use a combination of measures to evaluate both atherosis and sclerosis.
(17) Two major features of atherosclerosis may be distinguished: (a) atherosis caused by lipid infiltration in cells and extracellularly and (b) sclerosis caused by connective tissue deposition and by functional disturbance of the endothelium, leading to impairment of endothelium-derived relaxing factor (EDRF)-release and reduced arterial compliance.
(18) There was no statistically significant relation between acute atherosis and parity, degree of proteinuria, severity and duration of hypertension, or antihypertensive therapy.
(19) Since acute atherosis-like lesions have been reported in placentas of pregnant women with systemic lupus erythematosus and in rejected renal transplants, a possible maternal immunological reaction against fetal tissues could be responsible for the pathogenesis of these entities.
(20) Acute atherosis was not seen in normal pregnancies or in pregnancies of diabetic women but was seen in pregnancies complicated by preeclampsia, small-for-gestational-age infants, or both.