squamocolumnar junction


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Related to squamocolumnar junction: Transformation Zone

squa·mo·col·um·nar junc·tion

the site of transition from stratified squamous epithelium to columnar epithelium, as at the gastroepophageal junction.
Enlarge picture
SQUAMOCOLUMNAR JUNCTION: Squamocolumnar junction of the distal esophagus (seen endoscopically)

squamocolumnar junction

1. The point in the cervical canal at which the squamous and columnar epithelia meet. As most cervical cancers begin in this area, it is important to obtain cells from this location for the Pap test.
2. The point above the lower esophageal sphincter where the squamous epithelium of the esophagus and the columnar epithelium of the stomach meet.
Synonym: transition zone. See: illustration
See also: junction
References in periodicals archive ?
Similar findings may be encountered by sampling the squamocolumnar junction and the GEJ.
Follow-up data forms allowed collection of information about postoperative hemorrhage, vaginal discharge and infection, colposcopic findings, squamocolumnar junction location, presence of cervical button (a postsurgical protuberant wound deformity) or stenosis (inability to pass a small cotton-tipped swab into the endocervical canal), and laboratory findings.
As the Table 1 suggests, out of 834, squamocolumnar junction was fully visualized in 817 women i.e.
The mucosal EGJ in a healthy person overlaps with the squamocolumnar junction (SCJ) (Figure 1), but the SCJ in patients with a hiatal hernia is frequently displaced proximally, to various degrees, away from the mucosal EGJ (Figure 2).
Also, it is less likely that the squamocolumnar junction and transformation zone will be adequately visualized by cervicography.
On repeat anoscopy, an ulcerated polypoid mass measuring 1 cm, involving the distal rectum at the 9 o'clock position with extension into the squamocolumnar junction, was seen.
Cervicography, like colposcopy, is most useful in young women in whom the full squamocolumnar junction and transformation zone can be visualized, in women considered at higher risk of cervical neoplasia, and in conjunction with the Pap smear.