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ACHALASIA
Kegagalan peristaltik + relaksasi - setinggi lower sphincter esofagus
Etiology:
idiopathic :
 abnormality of Auerbach plexus / medullary dorsal nucleus; ? neurotropic virus, ? gastrin
hypersensitivity
Chagas disease
megaesophagus : dilatasi esophagus 1/3 atas,seringkaliseluruh panjang esophagus, tidakada peristaltik
primer pada level dibawah cricopharyngeus
 nonperistaltic contractions
 "bird-beak"/"rat tail" deformity = V-shaped conical + symmetric tapering dari segment yang stenosis
dengan penyempitan yang nyata pada GE junction
 Hurst phenomenon = temporary transit through cardia when hydrostatic pressure of barium column is above tonic
LES pressure
 Pengosongan esofagus yang cepat dan tiba2 sesudah munum minuman bercarbonasi(eg, Coke)
 "vigorous achalasia" = numerous tertiary contractions in nondilated distal esophagus of early achalasia
 prompt relaxation of LES upon amyl nitrate inhalation (smooth-muscle relaxant)
Gambaran radiologi ::
 Opasitas berbentukkonveks dibelakang batas jantung kanan;
 right convex opacity mungkin tertambat oleh arkus azygos sehingga dilatasi lebih lebar diatas + dibawah
 air-fluid level (stasis di esophagus yang terisi sekresi+ residue makanan)
 Sedikit atau tidak ada udara di lambung
 trachea displacement ke anterior + bowing (LAT view)
 chronic aspiration pneumonia berupa bercak di paru bilateral (M. fortuitum-cheloneiinfection)
DD:
(1)Neoplasm (separation of gastric fundus from diaphragm; normal peristalsis; asymmetric tapering)
(2)Peptic stricture of esophagus

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Achalasia

  • 1. ACHALASIA Kegagalan peristaltik + relaksasi - setinggi lower sphincter esofagus Etiology: idiopathic :  abnormality of Auerbach plexus / medullary dorsal nucleus; ? neurotropic virus, ? gastrin hypersensitivity Chagas disease megaesophagus : dilatasi esophagus 1/3 atas,seringkaliseluruh panjang esophagus, tidakada peristaltik primer pada level dibawah cricopharyngeus  nonperistaltic contractions  "bird-beak"/"rat tail" deformity = V-shaped conical + symmetric tapering dari segment yang stenosis dengan penyempitan yang nyata pada GE junction  Hurst phenomenon = temporary transit through cardia when hydrostatic pressure of barium column is above tonic LES pressure  Pengosongan esofagus yang cepat dan tiba2 sesudah munum minuman bercarbonasi(eg, Coke)  "vigorous achalasia" = numerous tertiary contractions in nondilated distal esophagus of early achalasia  prompt relaxation of LES upon amyl nitrate inhalation (smooth-muscle relaxant) Gambaran radiologi ::  Opasitas berbentukkonveks dibelakang batas jantung kanan;  right convex opacity mungkin tertambat oleh arkus azygos sehingga dilatasi lebih lebar diatas + dibawah  air-fluid level (stasis di esophagus yang terisi sekresi+ residue makanan)  Sedikit atau tidak ada udara di lambung  trachea displacement ke anterior + bowing (LAT view)  chronic aspiration pneumonia berupa bercak di paru bilateral (M. fortuitum-cheloneiinfection) DD: (1)Neoplasm (separation of gastric fundus from diaphragm; normal peristalsis; asymmetric tapering) (2)Peptic stricture of esophagus