KUB:
 1. Much stool in colon.
 2. Scoliosis along L-spine with hemivertebrae in lower L-spine.

UGI(Barium swallow):
 1. Marked smooth dilatation of esophagus with air-contrast level
    due to lower esophagus segmental lumen narrowing and absence of
    esophageal peristalsis.

CT with IV contrast:
 1. Abnormal hight position of right kidney without hydronephrosis
    in right sub-phrenic region, in favor of renal ectopy.
 2. Scoliosis along L-spine with a right extra-hemivertebrae
    in L3/L4.

LGI(Barium enema):
 Well-distention of rectum without segmental narrowing.

Surgery:
 Myotomy and fundoplication.

(1)Diffuse esophageal spasm (DES)
1. Uncoordinated contraction of esophagus
2. Barium swallow: multiple spasms with corkscrew appearance

(2)Nutcracker esophagus (another form of spasm)
1. High-amplitude coordinated contraction of esophagus.
2. Barium swallow: Nonspecific finding

(3)Achalasia (Classic achalasia):
1. Loss inhibitory nerves at lower esophageal sphincter with lower esophageal obstruction due to failure of sphincter to completely relax.
2. Usual presence of nonperistaltic isolated contractions or low-amplitude simultaneous contractions of the esophageal body in severer cases.
3. Barium swallow: lower esophageal obstruction with bird-beak and dilatation of proximal esophagus with stasis of barium (air-fluid level).

(4)Vigorous achalasia (VA, described in 1957 as a subset of achalasia or an early stage of classic achalasia):
1. Loss inhibitory nerves at lower esophageal sphincter with lower esophageal obstruction due to failure of sphincter to completely relax.
2. But presence of high-amplitude simultaneous contractions of the esophageal body.
3. Barium swallow: findings combining achalasia and DES.
4. Treatment: similar to classic achalasia.

(5)Esophageal stricture:
1. Acquired narrowing of esophagus caused by a variety of entities.
2. Barium swallow: lumen narrowing with mucosal change.