antrum


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

antrum

 [an´trum] (pl. an´tra, antrums) (L.)
a cavity or chamber. adj., adj an´tral.
antrum of Highmore maxillary sinus.
mastoid antrum an air space in the mastoid portion of the temporal bone communicating with the middle ear and the mastoid cells.
antrum maxilla´re (maxillary antrum) maxillary sinus.
pyloric antrum (antrum pylo´ricum) the proximal, expanded portion of the pyloric part of the stomach.
tympanic antrum (antrum tympa´nicum) mastoid antrum.

an·trum

, gen.

an·tri

, pl.

an·tra

(an'trŭm, -trī, -tră), [TA] Do not confuse this word with atrium.
1. Any nearly or relatively closed cavity.
2. Synonym(s): pyloric antrum
[L. fr. G. antron, a cave]

antrum

(ăn′trəm)
n. pl. an·tra (-trə)
1. A cavity or chamber, especially one in a bone.
2. Either of the sinuses in the bones of the upper jaw, opening into the nasal cavity.

an′tral adj.

an·trum

, pl. antra (an'trŭm, -tră) [TA]
1. Any nearly closed cavity, particularly one with bony walls.
2. Synonym(s): pyloric antrum.
[L. fr. G. antron, a cave]

antrum

A hollow cavity or sinus in a bone. The maxillary antrums (or antra) are the cavities in the cheek bones. The mastoid bones, below and behind the ears, contain the mastoid antrums (antra). From the Latin antrum , a cave.

an·trum

, pl. antra (an'trŭm, -tră) [TA] Do not confuse this word with atrium.
Any nearly or relatively closed cavity.
[L. fr. G. antron, a cave]
References in periodicals archive ?
They account for 3-26% of benign epithelial gastric polyps and are mostly singular, smaller than 2 cm, can be seen in all areas of the stomach but are more often localized in the antrum (28).
Further, this species can be readily differentiated based on female genitalia; ductus bursae lacks spines and antrum is weakly developed.
A set of variable sized sturdy and sharp bone curettes of little curvature in the end was effectively employed to expose small antrum, aditus and attic.
In the experimental group, a progressive water injection method was employed to determine the spatial relationship between the jejunal feeding tube and the antrum. Specifically, the tube was first positioned at a depth of 55 cm.
Anatomical/surgical factors of weight regain after LSG includes an initial large sleeve, incompletely resected fundus, and a large remnant antrum, whereas those after LGP includes dilatation or gastric prolapse of the gastric plication as observed in the current series [5, 18].
The variability in the outcomes of esophageal motility may be attributable to the timing of postoperative follow-up, the variability of surgical techniques, the different bougie sizes, and the different dissections from pylorus, thus creating a sleeve with variable distensibility and intraluminal pressure with, in part, the preservation of the antrum. The percentage of peristaltic normal contractions increased postoperatively and is not statistically significant at 3 months [11] but statistically significant later [5].
In the course of surgery due to the presence of the 5 cm x 6 cm mass in the lesser curvature of gastric antrum and to obtain a 2 cm safety margin for the mass resection, subtotal gastrectomy was evitable.
Caption: Figure 2: Cone Beam CT images showing the dislodged molar tube lying outside the right maxillary antrum, as indicated by the arrow in axial view (a), while its position in relation to the rigid plate and screws on the zygomatic buttress can be seen clearly in 3-D image (b).
In the control group, the SP-immunoreactive nerve fibres were more numerous in the circular muscle layer and they constitute 4.82 [+ or -] 0.16 in the antrum, 3.65 [+ or -] 0.16 in the corpus, and 6.07 [+ or -] 0.13 in the pylorus (Table 1, Figures 6(a)-6(c)).
Repeat endoscopy at our institution on day +864 redemonstrated GAVE (Figure 2) and APC was again used to treat lesions in the gastric antrum. Prednisone was increased from 5 mg daily to 10 mg daily due to a suspicion that this may be related to GVHD.
We did a gastrotomy on the anterior surface of the pyloric antrum. The polyp was wide-based (Figure 3), occluding almost completely the pylorus and the duodenum only leaving a space for a hand's little finger to pass.
The formation of a 8x7x5 cm ulcero-vegetating tumor that was located in the lesser curvature of the corpus and antrum, and was 5 cm from the proximal surgical margin and 5.5 cm from the distal surgical margin was macroscopically observed in the gastrectomy material.