quadrate lobe

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1. a more or less well defined portion of an organ or gland.
2. one of the main divisions of a tooth crown.
azygos lobe (lobe of azygos vein) a small anomalous lobe situated at the apex of the right lung, produced when the azygos vein arches over the upper part of the lung instead of at the hilus and presses deeply into the lung tissue to form a fissure that isolates a medial part of the lung.
caudate lobe a small lobe of the liver between the inferior vena cava on the right and the left lobe.
ear lobe the lower fleshy, noncartilaginous portion of the external ear.
flocculonodular lobe one of the main subdivisions of the cerebellum, located inferiorly, consisting of the paired flocculi, their peduncles, and the nodule of the vermis.
frontal lobe the anterior portion of the gray matter of each cerebral hemisphere.
hepatic lobe one of the lobes of the liver, designated the right and left and the caudate and quadrate.
l's of lung the five major subdivisions of the lungs. see accompanying illustration and see lung.
The lobes of the lungs. From Frazier et al., 2000.
occipital lobe the most posterior portion of each cerebral hemisphere, forming a small part of its posterolateral surface. See illustration.
The occipital lobe of the brain. From Applegate, 2000.
parietal lobe the upper central portion of the gray matter of each cerebral hemisphere, between the frontal lobe and the occipital lobe and above the temporal lobe. It is the receptive area for fine sensory stimuli, and the highest integration and coordination of sensory information is carried on here. Damage to it can produce defects in vision or aphasia.
polyalveolar lobe a congenital disorder characterized in early infancy by the presence of far more than the normal number of alveoli in a lobe of the lungs; thereafter, normal multiplication of alveoli does not take place and they become enlarged, i.e., emphysematous.
quadrate lobe
2. a small lobe of the liver, between the gallbladder on the right, and the left lobe.
Riedel's lobe an anomalous tongue-shaped mass of tissue projecting from the right lobe of the liver in some individuals.
spigelian lobe caudate lobe.
temporal lobe a long tongue-shaped process that is the lower lateral portion of each cerebral hemisphere.

quadrate lobe

(1) Precuneus [NA6]. 
(2) Quadrangular lobule (of cerebellum); lobulus quadrangularis (cerebellaris). 
(3) Quadrate lobe (of liver); lobus quadratus (hepatis) [NA6].

quad·rate lobe

(kwahd'rāt lōb)
1. A lobe on the inferior surface of the liver located between the fossa for the gallbladder and the fissure for the ligamentum teres;
2. Synonym(s): quadrangular lobule.
3. Synonym(s): precuneus.
References in periodicals archive ?
We have found the incidence of curved and horizontal fissures on the quadrate lobe with equal occurrence i.e.
False positive liver scan caused by anomalous quadrate lobe and right portal branch.
Although many workers have studied in details the surface features of liver including the accessory fissures and lobes, but the detailed anatomy of the caudate and the quadrate lobes continues to be elusive to anatomists, radiologists and the surgeons for want of a precise description of these two lobes of the liver.
The intermediate branch emits the cystic artery and branches for the right medial and quadrate lobes. The left branch, before finishing in right gastric artery, emits branches for the quadrate, left medial and left lateral lobes of the liver.