What's the difference between bilateral and symmetrical?

Bilateral


Definition:

  • (a.) Having two sides; arranged upon two sides; affecting two sides or two parties.
  • (a.) Of or pertaining to the two sides of a central area or organ, or of a central axis; as, bilateral symmetry in animals, where there is a similarity of parts on the right and left sides of the body.

Example Sentences:

  • (1) Bilateral symmetric soft-tissue masses posterior to the glandular tissue with accompanying calcifications should suggest the diagnosis.
  • (2) These patients had undergone selective and bilateral simultaneous IPS sampling for diagnostic purposes or for neurosurgical indications.
  • (3) Two cases are presented of bilateral ureteral obstruction and uremia due to pressure from nodes involved in disseminated lymphoma.
  • (4) Most of these patients had undergone hysterectomy and bilateral oophorectomy.
  • (5) Histopathological studies confirmed that mice fed 933cu-rev died from bilateral renal cortical tubular necrosis consistent with toxic insult, perhaps due to Shiga-like toxins.
  • (6) We describe 10 patients with cerebral venous thrombosis: two had protein S deficiency, one had protein C deficiency, one was in early pregnancy, and there was a single case of each of the following: dural arteriovenous malformation, intracerebral arteriovenous malformation, bilateral glomus tumours, systemic lupus erythematosus, Wegener's granulomatosis, non-Hodgkin's lymphoma.
  • (7) A constellation of histologic lesions was identified in brain (diffuse meningoencephalitis with bilaterally symmetrical thalamic necrosis), liver (pericholangiohepatitis), lung (pneumonitis), and spleen (lymphoid hyperplasia); this tetrad is apparently unique to this model system.
  • (8) The H reflex response was found in the anterior tibialis muscle, at least unilaterally if not bilaterally, in eight of nine subjects with Huntington disease and in five of eight persons at risk.
  • (9) This article presents the case of bilateral absent maxillary permanent molars with severe oligodontia and no other abnormalities.
  • (10) These findings suggest that conditioned circling is mediated by a bilateral involvement of the mesotelencephalic dopaminergic systems.
  • (11) The effect of Y-516 on the hyperactivity induced by dopamine injected bilaterally into the nucleus accumbens was compared with those of clocapramine (CCP), haloperidol (HPD) and chlorpromazine (CPZ).
  • (12) Among the epileptic patients investigated by the stereotactic E. E. G. (Talairach) whose electrodes were introduced at or around the auditory cortex (Area 41, 42), the topography of the auditory responses by the electrical bipolar stimulation and that of the auditory evoked potential by the bilateral click sound stimulation were studied in relation to the ac--pc line (Talairach).
  • (13) The same dose of clonidine evoked a much larger drop in blood pressure in another group of rats in which an equialent increase in blood pressure was produced by bilateral section of the vagosympathetic trunks and occlusion of both carotid arteries.
  • (14) Radio-iron utilization was nearly normal in these patients, only bilateral nephrectomized patients showed a reduced radio-iron utilization.
  • (15) Most of the bilateral lung lesions were removed through a median sternotomy so as to avoid staged bilateral thoracotomy.
  • (16) A therapeutic approach is suggested which emphasizes specific antibiotic regimens appropriate to the primary site of infection and prompt neurosurgical intervention with evacuation of the subdural spaces bilaterally.
  • (17) A 56-year-old man was admitted because of left facial palsy and hearing loss of bilateral ears.
  • (18) This early elevation in IOP was significantly more pronounced in bilateral superior cervical ganglionectomized (BG) rabbits.
  • (19) Before this report of 2 cases there were 22 cases of asynchronous bilateral renal cell carcinoma in Japanese literature.
  • (20) A high index of suspicion of bilateral tumors and a thorough work-up resulted in the early diagnosis of small tumors.

Symmetrical


Definition:

  • (a.) Involving or exhibiting symmetry; proportional in parts; having its parts in due proportion as to dimensions; as, a symmetrical body or building.
  • (a.) Having the organs or parts of one side corresponding with those of the other; having the parts in two or more series of organs the same in number; exhibiting a symmetry. See Symmetry, 2.
  • (a.) Having an equal number of parts in the successive circles of floral organs; -- said of flowers.
  • (a.) Having a likeness in the form and size of floral organs of the same kind; regular.
  • (a.) Having a common measure; commensurable.
  • (a.) Having corresponding parts or relations.

Example Sentences:

  • (1) Bilateral symmetric soft-tissue masses posterior to the glandular tissue with accompanying calcifications should suggest the diagnosis.
  • (2) In one patient, the pretibial myxedema developed symmetrically half a year after the appearance of endocrine exophthalmos.
  • (3) A constellation of histologic lesions was identified in brain (diffuse meningoencephalitis with bilaterally symmetrical thalamic necrosis), liver (pericholangiohepatitis), lung (pneumonitis), and spleen (lymphoid hyperplasia); this tetrad is apparently unique to this model system.
  • (4) For trials in which the target was present in the array, RT functions were roughly symmetric, the shortest RTs being for extreme distractor ratios, and the longest RTs being for arrays in which there were an equal number of each distractor type.
  • (5) Symmetrical cases (the so-called siamese twins) have an obvious predominance (92.3%).
  • (6) Sedimentation-velocity experiments indicate the M. elsdenii enzyme (s20,w = 4.95 S) to be essentially globular, while the D. vulgaris enzyme (s20,w = 4.1 S) has a less symmetric shape.
  • (7) The Soret MCD of the reduced protein is interpreted as th sum of two MCD curves: an intense, asymmetric MCD band very similar to that exhibited by deoxymyoglobin which we assign to paramagnetic high spin cytochrome a3(2+) and a weaker, more symmetric MCD contribution, which is attributed to diamagnetic low spin cytochrome a2+.
  • (8) In the perineuronal neuropil of large pyramidal neurons (layers V-VI) there appear symmetric synapses with pyramidal cells, dendritic processes and dendritic spines.
  • (9) After injection of HRP-WGA into the contralateral hippocampus 2% of hilar NPY-i neurons were retrogradely labeled and symmetric NPY-i synapses were found on the cell bodies and dendrites of unstained HRP-WGA labeled neurons.
  • (10) Pompholyx (Dyshidrosis) is a disease of unknown etiology presenting as symmetrical, vesicular hand and foot dermatitis.
  • (11) In the degradation reaction, formation of the symmetrically substituted citrate ester of codeine, 1, was found to predominate.
  • (12) The symmetrical reagent 5,5'-dithiobis-(1-methyltetrazole) activates mitochondrial aldehyde dehydrogenase approximately 4-fold, whereas the smaller related compound methyl l-methyltetrazol-5-yl disulphide is a potent inactivator.
  • (13) We studied the effect of symmetric, biphasic sinusoidal electromagnetic fields (EMF) (20 Hz, 6 mT) on the differentiation of normal human skin fibroblasts (HH-8), normal human lung fibroblasts (WI38), and SV40-transformed human lung fibroblasts (WI38SV40) in in vitro cultures.
  • (14) According to X2 (Chi-square) test and asymmetry coefficient (beta 1) it was pointed out that the distribution of menarche in examined schoolgirls was normal and symmetric.
  • (15) The effect of luminal chloride addition was examined in tubules perfused symmetrically with chloride-free solutions.
  • (16) Any patient with a fairly symmetrical 'quiet' eye disease, especially if congenital, should be suspected of having an hereditary disease--presumably due to a recessive gene, even if the parents are not consanguineous, but possibly due to a mutation which could prove dominant; a search of the literature in such cases is useful.
  • (17) In all of the old rats, but not in any of the young ones, symmetric high voltage activity was observed in the frontal pole of the cortex.
  • (18) Flourescence characteristic of indolamine was seen in 5 pairs of symmetric neurons situated in the anterior part of the worm.
  • (19) The thiocarboxyl group reacts with diaryl disulfides to give an unsymmetrical acyl disulfide in dimethylformamide (DMF) and a symmetrical diacyl disulfide in aqueous DMF.
  • (20) The authors describe the radiographic appearance and the investigation techniques for circumscript lipoma in the subcutaneous tissue, in the muscles and for a large diffuse symmetric lipomatosis.