Gastroenterology & Hepatology

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Benson T. Massey, MD
Professor
Doctor of Medicine (MD)
Johns Hopkins University School of Medicine, 1983
Residency
University of Rochester, 986
Fellowship
Gastroenterology, Medical College of Wisconsin Affiliated Hospitals, 1990

Clinical Interests & Patient Appointments 

 

PUBLICATIONS (To view complete Curriculum Vitae, click here)

 

Manuscripts

 

1.         Massey BT.  Eikenella corrodens isolated from a hepatic abscess.  Am J Gastroenterol 1989; 84:1100-1.

 2.        Cook IJ, Dodds WJ, Dantas RO, Kern MK, Massey BT, Shaker R, Hogan WJ.  Timing of videofluoroscopic, manometric events and bolus transit during the oral and pharyngeal phases of swallowing.  Dysphagia 1989; 4:8-15.

 3.        Cook IJ, Dodds WJ, Dantas RO, Massey B, Kern MK, Lang IM, Brasseur JG, Hogan WJ.  Opening mechanism of the human upper esophageal sphincter.  Am J Physiol 1989; 257:G748-59.

 4.        Dantas RO, Dodds WJ, Massey BT, Kern MK. The effect of high- vs low-density barium preparations on the quantitative features of swallowing.  AJR. American Journal of Roentgenology 1989; 153:1191-5.

 5.        Dantas RO, Dodds WJ, Massey BT, Shaker R, Cook IJ.  Manometric characteristics of the glossopalatal sphincter.  Dig Dis Sci 1990; 35:161-6.

 6.        Helm JF, Massey BT, Martin CJ, Dodds WJ, Hogan WJ, Arndorfer RC.  Esophageal acidification does not increase lower esophageal sphincter pressure.  Gut 1990; 31:266-9.

 7.        Dantas RO, Kern MK, Massey BT, Dodds WJ, Kahrilas PJ, Brasseur JG, Cook IJ, Lang IM.  Effect of swallowed bolus variables on the oral and pharyngeal phases of swallowing.  Am J Physiol 1990; 258:G675-81.

8.         Massey BT, Dodds WJ, Hogan WJ, Brasseur JG, Helm JF.  Abnormal esophageal motility:  An analysis of concurrent radiographic and manometric findings.  Gastroenterology 1991; 101:344-354.

9.         Massey BT, Geenen JE, Hogan WJ.  Evaluation of a voice recognition system for generation of therapeutic ERCP reports.  Gastrointest Endosc 1991; 37:617-620.

10.       Massey BT, Hogan WJ, Dodds WJ, Dantas RO. Alteration of the upper esophageal sphincter belch reflex in patients with achalasia. Gastroenterology 1992;103:1574-9.

11.       Sonnenberg A, Massey BT, McCarty DJ.  Epidemiology of achalasia in the United States: a study of hospital discharges among medicare beneficiaries. Dig Dis Sci 1993;38:233-44.

12.       Ren J, Massey BT, Dodds WJ, Kern MK, Brasseur JG, Shaker R, Harrington SS, Hogan WJ, Arndorfer RC. Determinants of intrabolus pressure during esophageal peristaltic bolus transport. Am J Physiol 1993;264:G407-13.

13.       Sonnenberg AS, Massey BT, Jacobsen SJ. Hospital discharges resulting from esophagitis among Medicare beneficiaries. Dig Dis Sci 1994;39:183-8.

14.       Franco J***, Massey BT, Komorowski R. Cytomegalovirus infection causing pseudomembranous colitis. Am J Gastroenterol 1994;89:2246-8.

15.       Kusano M, Hogan WJ, Lang IM, Bonnevier JL, Massey BT, Shaker R. Initiation of esophageal secondary peristalsis by slow fluid infusion in the opossum: effect of hydrochloric acid. Am J Physiol 1996;270:G927-31.

16.       Manthey MW***, Massey BT, Arndorfer RC, Hogan WJ. Determinants of lower esophageal sphincter relaxation induced by esophageal balloon distension in man. Am J Physiol 1996;270:G1022-7.

17.       Dean R, Dua K, Massey BT, Berger WL, Hogan WJ, Shaker R. A comparative study of unsedated transnasal esophagogastroduodenoscopy and conventional EGD. Gastrointest Endosc 1996; 44:422-4.

18.       Murphy PP, Ballinger PJ, Massey BT, Shaker R, Hogan WJ. Discrete ulcers in Barrett’s esophagus: relationship to acute gastrointestinal bleeding. Endoscopy 1998; 30:367-70.

19.       Jailwala J, Massey BT, Staff D, Shaker R, Hogan WJ.  Post-Fundoplication symptoms: the role for endoscopic assessment of fundoplication integrity. Gastrointest Endosc 2001;54:351-6.

20.       Vasilopoulos S, Murphy P, Auerbach A, Massey BT, Shaker R, Stewart E, Komorowski RA, Hogan WJ. The small-caliber esophagus: an unappreciated cause of dysphagia for solids in patients with eosinophilic esophagitis. Gastrointest Endosc 2002;55:99-106.

21.       Shaker R, Easterling C, Kern M, Nitschke T, Massey B, Daniels S, Grande B, Kazandjian M, Kikeman K. Rehabilitation of swallowing by exercise in tube-fed patient with dysphagia secondary to abnormal UES Opening. Gastroenterology 2002;122:1314-21.

22.       Gawrieh S***, Komorowski RA, Massey BT. Scalp metastases as the first manifestation of pancreatic cancer. Dig Dis Sci 2002;47:1469-71.

23.       Prajapati DN, Saeian K, Binion D, Staff DM, Kim JP, Massey BT, Hogan WJ. Volume and yield of screening colonoscopy at a tertiary medical center after change in medicare reimbursement. Am J Gastroenterol 2003;98: 194-9.

24.       Potter JW, Saeian K, Staff DM, Massey BT, Komorowski RA, Shaker R, Hogan WJ. Eosinophilic esophagitis in adults: an emerging problem with unique esophageal features. Gastrointestinal Endoscopy 2004;59:355-61.

25.       Shaker R, Bardan E, Gu C, Massey BT, Sanders T, Kern MK, Hoffmann RG, Hogan WJ. Effect of lower esophageal sphincter tone and crural diaphragm contraction on distensibility of the gastroesophageal junction in man.  Am J Physiol Gastrointest Liver Physiol. 2004;287:G815-21.

26.       Massey BT, Simuncak C, LeCapitaine-Dana NJ, Pudur S*. Transient lower esophageal sphincter relaxations do not result from passive opening of the cardia by gastric distension. Gastroenterology 2006; 130: 89-95. 

27.       Bardan E, Kern M, Torrico S, Arndorfer RC, Massey BT, Shaker R. Radial asymmetry of the upper oesophageal sphincter pressure profile: fact or artefact. Neurogastroenterol Motil. 2006;18:418-24.

28.       Lawal A***, Barboi A, Krasnow A, Helleman R, Jaradeh S, Massey BT. Rapid Gastric Emptying Is More Common than Gastroparesis in Patients With Autonomic Dysfunction.
Am J Gastroenterol. 2006 Nov 13; [Epub ahead of print]

29.       Attila T***, Datta MW, Sudakoff G, Abu-Hajir M,  Massey BT. Intrahepatic portal hypertension secondary to metastatic carcinoma of the prostate. WMJ (accepted for publication).

*          Mentored Student

***      Mentored Fellow

 

Abstracts

1.         Cook IJ, Massey BT, Dantas RO, Dodds WJ, Hogan WJ.  Alterations in oral-pharyngeal deglutition caused by increases in swallowed bolus volume.  Gastroenterology 1988; 94:A77.

 2.        Cook IJ, Dodds WJ, Dantas RO, Massey BT, Kern M, Hogan WJ.  Mechanisms and pressure-flow kinetics of upper esophageal sphincter during swallowing.  Gastroenterology 1988; 94:A76.

 3.        Cook IJ, Dantas RO, Massey BT, Kern MK, Hogan WJ.  Mechanisms and pressure flow kinetics of upper esophageal sphincter opening during swallowing.  Aust NZ J Med 1988; 18:396.

 4.        Cook IJ, Massey BT, Dantas RO, Dodds WJ, Hogan WJ.  Alterations in oropharyngeal deglutition caused by increases on swallowed bolus volume.  Aust NZ J Med 1988; 18:400.

 5.        Massey BT, Dodds WJ, Helm JF, Brasseur JG, Hogan WJ.  Abnormal esophageal motility: comparison of radiographic and manometric findings.  Gastroenterology 1988; 95:878.

 6.        Helm JF, Massey BT, Martin CJ, Dodds WJ, Hogan WJ, Arndorfer RC.  Effect of distal esophageal acidification on human lower esophageal sphincter (LES) pressure.  Gastroenterology 1988; 95:870.

 7.        Dantas RO, Massey BT, Kern MK, Cook IJ, Dodds WJ.  Effect of bolus volume and viscosity on the pharyngeal phase of swallowing. Gastroenterology 1988; 95:861.

 8.        Massey BT, Black ER.  Clinical parameters associated with a positive stool ova and parasite (O&P) exam in medical inpatients.  Gastroenterology 1989; 96:A325.

 9.        Massey BT, Black ER.  The stool examination for ova and parasites (O&P):  reasons for suboptimal utilization in medical inpatients.  Gastroenterology 1989; 96:A326.

10.       Massey BT, Hogan WJ, Dodds WJ, Dantas RO.  Impairment of the esophageal belch reflex in achalasia patients:  abnormality of the upper esophageal sphincter (UES) response.  Gastroenterology 1989; 96:A326.   -  Oral presentation

11.       Brasseur JG, Dodds WJ, Massey BT, Kern MK, Helm JF, Kahrilas PJ.  Esophageal pressure during peristaltic transport of a fluid bolus: distinction between intrabolus and contractile-segment domains.  Gastroenterology 1989; 96:A56.

12.       Carron DA**, Massey BT, Dodds WJ, Hogan WJ.  Heartburn but not esophageal acidification, per se, increases the rate of spontaneous swallowing.  Gastroenterology 1989; 96:A74.

13.       Dantas RO, Dodds WJ, Kern MK, Massey BT, Cook IJ.  Bolus volume and consistency: effect on oral and pharyngeal phases of swallowing.  Gastroenterology 1989; 96:A109.

14.       Massey BT, Black ER.  Inpatient stool ova and parasite testing: grounds for improvement.  Am J Gastroenterology 1989; 84:1191.

15.       Massey BT, Hogan WJ, Dantas RO, Arndorfer RC, Dodds WJ.  Conscious suppression of the upper esophageal sphincter belch reflex in normal volunteers.  Gastroenterology 1990; 98:A373.

16.       Massey BT, Sonnenberg A, McCarty DJ.  Achalasia epidemiology and comorbidity in a geriatric population: an analysis of medicare data.  Gastroenterology 1990; 98:A85.

17.       Massey BT, Sonnenberg A, McCarty DJ.  The epidemiology of achalasia in the medicare population.  Gastroenterology 1990; 99:1221.

18.       Massey BT, Geenen, JE, Hogan, WJ.  Evaluation of a voice recognition system for generation of therapeutic ERCP reports.  Gastrointest Endosc 1991; 37:270.

19.       Dean RS, Massey BT, Shaker R, Helm JF, Dodds WJ, Hogan WJ.  Esophageal non-compliance causing intermittent obstructive dysphagia:  a subtle complication of GERD.  Gastroenterology 1991; 100:A51.

20.       Carron DA, Foley WD, Burdick JS, Massey BT, Kern MK, Hogan WJ. Sodium bicarbonate (NaHCO3) effect on postprandial gastric volume in man determined by magnetic resonance imaging (MRI). Gastroenterology 1992;102:A6.

21.       Massey BT, Dodds WJ, Hogan WJ, Ren J, Brasseur JG. Patients with esophageal pulsion diverticula have elevated intrabolus pressures: an analysis using concurrent manometry and videofluoroscopy. Gastroenterology 1992;102:A481.

22.       Ballinger PS, Bohorfoush AG, Massey BT, Shaker R, Young C. Discrete ulcers in Barrett's esophagus: the relationship to acute GI bleeding. Gastrointest Endosc 1992;38:229. 

23.       Massey BT, Hofmann CL, Hogan WJ, Dodds WJ. Sustained oscillatory pressure waveforms in patients with achalasia: evidence for cholinergic mediation. Gastroenterology 1992;103:1409. 

24.       Ren J, Massey BT, Harrington SS, Hofmann CL, Arndorfer RC, Kern MK, Dodds WJ, Brasseur JG, Hogan WJ. Small diameter manometric catheters have no significant effect on intrabolus pressure when placed across the gastroesophageal junction (GEJ). Gastroenterology 1992;103:1411. 

25.       Brasseur JG, Hsieh P-Y, Li M-J, Kern MK, Massey BT, Dodds WJ, Hogan WJ. Separate esophageal contraction waves above and below the transition zone. Gastroenterology 1993;104:A482.

26.       Massey BT, Kern MK, Brasseur JG, Hofmann CL, Arndorfer RC, Ren J, Hogan WJ. The transition zone of the human esophagus: effect of bolus volume on manometric characteristics. Gastroenterology 1993;104:A548.

27.       Massey BT, Kern MK, Brasseur JG, Hofmann CL, Arndorfer RC, Ren J, Hogan WJ. The peristaltic pressure wave becomes less coordinated during passage through the human esophageal transition zone. Gastroenterology 1993;104:A548.

28.       Ballinger PJ, Hogan WJ, Bohorfoush AG, Massey BT, Shaker R, Komorowski RA. Short segment Barrett's epithelium: prevalence and accuracy of endoscopic detection.  Gastrointest Endosc 1993;39:271.

29.       Earnest ML, Bohorfoush AG, Sethi A, Massey BT. Evidence of proximal esophageal injury after variceal band ligation: prevention by modification of overtube insertion. Gastrointest Endosc 1993;39:274. 

30.       Massey BT, Eckert MD, Layman RD, Hogan WJ. Development of an opossum model of achalasia by chronic oral administration of N-omega-nitro-L-arginine (L-NNA). J Gastrointest Mot 1993;5:203.

31.       Radke JS**, Massey BT, Kern MK, Hofmann C, Arndorfer RC, Brasseur JG, Hogan WJ. Analysis of bolus escape in the esophageal transition zone in normal volunteers.  J Gastrointest Mot 1993;5:211.

32.       Shaker R, Massey BT, Ren J, Hogan WJ, Dua KS, Arndorfer RC, Hofmann C. A preliminary report on the glottal protective closure response to esophageal air distension in achalasia patients. J Gastrointest Mot 1993;5:216.

33.       Kusano M, Hogan WJ, Layman RD, Lang IM, Bonnevier JL, Massey BT, Kern MK, Dunn BE, Shaker R. Characterization of the esophageal transition zone in opossum. Gastroenterology 1994;106:A528.

34.       Kusano M, Hogan WJ, Layman RD, Lang IM, Bonnevier JL, Massey BT, Kern MK, Shaker R. Secondary peristalsis during slow fluid infusions in opossums: effect of hydrochloric acid. Gastroenterology 1994;106:A529.

35.       Li M, Brasseur JG, Hsieh P-Y, Nicosia M, Kern MK, Massey BT. A conversion methodology to analyze manometric pressure data in space-time. Gastroenterology 1994;106:A530.

36.       Manthey MW***, Massey BT, Arndorfer RC, Hogan WJ. Determinants of reflex lower esophageal sphincter relaxation (LESR) provoked by esophageal balloon distension in man. Gastroenterology 1994;106:A536.

37.       Shaker R, Dean R, Dua K, Massey B, Berger W, Hogan W. Unsedated transnasal esophago-gastroduodenoscopy (T-EGD); an alternative to conventional EGD; a comparative study. Gastrointest Endosc 1994;40(2, Pt 2):32.

38.       Burdick JS, Hogan WJ, Massey BT, Bohorfoush AG, Parker H, Schmalz M. Triamcinolone injections decrease the need for dilation of rapidly recurring esophageal strictures. Gastrointest Endosc 1994;40(2, Pt 2):72.

39.       Dua KS, Shaker R, Dean RS, Massey BT, Trifan A, Ren J. Transnasal unsedated pharyngoesophagogastroduodenoscopy (T-PEDG) for evaluation of the pharyngeal and esophageal phases of swallowing. Dysphagia 1994;9:268. 

40.       Massey BT, Hofmann C, Arndorfer RC, Hogan WJ. The lower esophageal sphincter (LES) contraction induced by cholecystokinin-octapeptide (CCK) is at least partially cholinergically mediated in some patients with achalasia. Gastroenterology 1994;107:1142.

41.       Murphy PP, Massey BT, Bohorfoush AG, Shaker R, Hogan WJ. The ‘small calibre’ esophagus: a cause of recurrent dysphagia in young men. Gastroenterology 1995;108:A172.

42.       Kusano M, Hogan WJ, Bonnevier JL, Lang IM, Massey BT, Kawamura O, Shaker R. Differentiation between slow and rapid distention-induced secondary esophageal peristalsis in opossum. Gastroenterology 1995;108:A634.

43.       Massey BT, Regan JT*, Kern MK, Hofmann C, Arndorfer RC. Longitudinal esophageal motor function in man: an analysis using mucosal markers. Gastroenterology 1995;108:A646.

44.       Murphy PP***, Massey BT, Arndorfer RC, Kern MK, Hofmann C, Hogan WJ. Effect of increasing intrabolus pressures on esophageal peristaltic mechanics: an analysis using a barostat. Gastroenterology 1995;108:A653.

45.       Murphy PP***, Massey BT, Arndorfer RC, Kern MK, Hofmann C, Hogan WJ. Deglutitive inhibition affects smooth muscle contractions but not basal tone: an analysis using a barostat. Gastroenterology 1995;108:A653.

46.       Massey BT, Shaker A*, Kern M, Hofmann C, Arndorfer RC, Ryan C. Effect of atropine on esophageal longitudinal shortening in man. Dysphagia 1996;11:161. -   Oral presentation

47.       Massey BT, Arndorfer RC, Hofmann C, Shaker R, Hogan WJ. Treatment of achalasia by pneumatic dilation produces a cholinergic neuropraxis of the lower esophageal sphincter. Gastroenterology 1996;110:A714.

48.       Murphy PP***, Massey BT, Arndorfer RC, Hofmann C, Kern M, Hogan WJ. Human esophageal tone has a cholinergic component in normal subjects and patients with achalasia. Gastroenterology 1996;110:A721. 

49.       Staff DM**, Massey BT, Arndorfer RC, Hofmann C, Ryan C, Kern M. Effect of balloon distension on esophageal shortening in man. Gastroenterology 1996;110:A763.

50.       Massey BT, Arndorfer RC, Hofmann C, Shaker R, Hogan WJ. Pneumatic dilation decreases the  cholinergic component of lower esophageal sphincter pressure in achalasia. Dig Dis Sci 1996; 41:1899.

51.       Massey BT, Ghahraman R*, Brasseur JG, Shaker R. Determinants and relevance of the ‘ramp’ intrabolus pressure during clinical esophageal manometry. Dysphagia 1997;12:109.  Oral presentation

52.       Massey BT, Gorny JM, Kern MK, Arndorfer RC, Ryan C, Hofmann C. Is esophageal longitudinal muscle function affected by deglutitive inhibition? Dysphagia1997;12:111.  Oral presentation

53.       Li M, Brasseur JG, Kern MK, Shaker R, Massey BT. Transition in motility between the striated- and smooth-muscle esophageal segments. Dysphagia 1997;12:112.

54.       Veligati LN***, Gorny JM, Massey BT. The distal peristaltic velocity of slower in patients with ‘nutcracker’ esophagus. Dysphagia 1998;13:127.

55.       Nicosia MA, Brasseur JG, Kern MK, Massey BT. Space-time evolution of active and passive esophageal muscle tension. Dysphagia 1998;13:134.

56.       Staff D, Saeian K, Massey BT, Shaker R, Hogan WJ. Post-fundoplication dysphagia: abnormal ramp (intrabolus) pressure provides substantiation of a ‘tight rap.’ Gastroenterology 1998;114:A294.  Oral presentation

57.       Ulualp S, Toohill R, Massey B, Arndorfer RC, Hogan WJ, Shaker R. Esophagopharyngeal distribution of refluxed gastric acid in patients with vocal cord nodule and chronic sinusitis. Gastroenterology 1998;114:A315.

58.       Massey BT, Gorny JM, Hofmann C, Arndorfer RC. Effect of intragastric pressure on belch-associated esophageal common cavity reflux events. Gastroenterology 1998;114: A799.

59.       Massey BT, Gorny JM, Hofmann C. Nitric oxide replacement produces a rebound LES contraction after initial relaxation in achalasia. Gastroenterology 1998;114:A799.

60.       Veligati LN***, Gorny JM, Massey BT. The nutcracker esophagus: is this a response to esophageal outflow obstruction? Gastroenterology 1998;114:A853.

61.       Easterling C, Kern M, Nitschke T, Grande B, Daniels S, Cullen GM, Massey BT, Shaker R. Effect of a novel exercise on swallow function and biomechanics in tube fed cervical dysphagia patients: a preliminary report. Dysphagia 1999;14:119.  Oral presentation

62.       Hofmann C, Ryan C, Saeian K, Massey B, Dua K, Staff D, Thierfelder S, Hogan W, Shaker R. Prevalence of esophagitis in apparently healthy individuals and GERD patient volunteers for research studies. Gastroenterology 1999; 116:A188.

63.       Jailwala J, Massey BT, Staff DM, Shaker R, Hogan WJ. Post-fundoplication symptoms: the role for the endoscopic assessment of fundoplication. Gastroenterology 1999; 116:A196.

64.       Massey BT, Narayanan S*, Gorny JM, Hofmann C, Arndorfer RC. Atropine increases transient lower esophageal sphincter relaxations (TLESRS) if intragastric pressure is held constant. Gastroenterology 1999; 116:A1037. Oral presentation

65.       Saeian K, Staff DM, Townsend W, Dua KS, Berger W, Massey BT, Shaker R. A new approach to screening for esophageal varices. Hepatology 1999 (Suppl); 30: A215.

66.       Easterling C, Kern M, Nitschke T, Grande B, Kazandijan M, Dikeman K, Massey BT, Shaker R. Restoration of oral feeding in 17 tube fed patients by the Shaker exercise. Dysphagia 2000; 15: 105.  Oral presentation

67.       Massey BT, Narayanan S, Arndorfer RC. Pressure at the gastroesophageal junction increases in man during gastric air distension. Gastroenterology 2000; 118:A155.

68.       Massey BT, LeCapitaine Dana N, Medda BK, Gu C, Lang IM, Shaker R. Reduction of reflux events by blockade of gastric mechanoreceptors: a novel endoscopic approach.  Gastroenterology 2000; 118:A486.

69.       Staff DM, Gu C, Medda B, Dana NJ,Hogan WJ, Massey BT, Kern MK, Shaker R. A new technique for evaluating lower esophageal sphincter compliance. Gastroenterology 2000; 118:A134-5.

70.      Massey BT, Ghahraman R*, Brasseur JG, Hogan WJ, Shaker R.  The “ramp” intrabolus pressure is related to features of outflow obstruction and high ramp pressures are associated with dysphagia. Neurogastroenterology and Motility 2000; 12:488. Oral presentation

71.       Massey BT, Narayanan S*. Relationships between abdominal straining, transient lower esophageal sphincter relaxations, and acid reflux events during gastric distension-induced belches in man. Neurogastroenterology and Motility 2000; 12:488. 

72.       Massey BT, Simuncak C, LeCapitaine-Dana NJ, Pudur S*. Transient lower esophageal sphincter relaxations do not result from passive opening of the cardia by gastric distension. Gastroenterology 2001; 120:A112. Oral presentation

73.      Shaker R, Gu C, Simuncak C, Kern MK, Massey BT, Arndorfer RC. Pharyngeal water stimulation induces gastric fundic relaxation. Gastroenterology 2001; 120:A287.

74.      Massey BT, Pudur S*. Characteristics of cardia opening during deglutition and TLESR: a concurrent manometric-videoendoscopic analysis. Neurogastroenterology & Motility 2001;13:411-412.

75.       Potter JW, Shaker R, Saeian K, Staff DM, Massey BT, Komorowski RA, Hogan WJ. Eosinophilic esophagitis in adults: an emerging problem with unique esophageal deformities. Gastroenterology 2002;122:A341-2.

76.      Massey BT. Failure of gastroesophageal junction (GEJ) opening during gastric distension discriminates achalasia patients from those with reflux esophagitis Gastroenterology 2002;122:A343.

77.       Massey BT. Hill Classification of the gastroesophageal junction: association with endoscopic findings of reflux disease. Gastrointest Endosc 2002;55:AB260.

78.      Massey BT, Haghighi S*. The loss of the flap valve at the gastroesophageal junction, not hiatal hernia length per se, is associated with severity of reflux esophagitis. Neurogastroenterology and Motility 2002; 14:440.

79.     Gawrieh S***, Jean MC***, Massey BT. Not just a failure to relax: timing and magnitude of lower esophageal after-contractions also contribute to esophageal outflow obstruction in achalasia.  Gastroenterology 2003;124:A161.  Poster of Distinction

80.       Massey BT, Haghighi S*. Hill grade, gender, NSAID use, body mass index and Helicobacter pylori status are independent predictors of endoscopic findings of reflux disease. Gastroenterology 2003:124:A409.  Poster of Distinction

81.      Garcia MA, Shaker R, Massey B, Hofmann C, Hogan W. Ambulatory 3-site 24-jour pharyngoesophageal pH monitoring use in clinical practice. Gastroenterology 2003;124:A411.

82.      Massey BT. The transverse fold “flap valve” at the gastroesophageal junction does not prevent reflux disease when a hiatal hernia is present. Gastrointestinal Endoscopy 2004;59:AB245.

83.       Liu J, Massey BT. Effect of atropine on lower esophageal sphincter after-contractions in achalasia. Neurogastroenterology & Motility 2004;16:674.

84.      Sanjeevi A, Komorowski RA, Shaker S, Massey BT, Shaker R, Saeian K, O’Loughlin C, Binion D, Hogan WJ. Eosinophilic esophagitis: potential sources for diagnostic error in the histopathologic detection. Gastroenterology 2005;128:A-7. Oral presentation

85.      Vijayapal AS, Graham MB, Massey BT, Knox JF, Emmons J, Collins JF, Hatoum OA, Otterson MF, Telford GL, Binion DG. Increasing awareness and impact of Clostridium difficile on inflammatory bowel disease: a tertiary referral center experience. Gastroenterology 2005;128:A-328.

86.      Bajaj S***, Massey B, Liu J, Rittmann T, Hofmann C, Shaker S, Shaker R. Validation of a catheter for recording of gastroesophageal junction distensibility. Gastroenterology 2005;128:A-407.

87.       Korus G, Blom D, Liu J, Hofmann C, Massey BT. Morbid obesity in patients with achalasia: a diagnostic and therapeutic conundrum. Gastroenterology 2005;128:A-806.

88.      Lawal A***, Barboi A, Krasnow A, Hellman R, Jaradeh S, Massey B. Patients with autonomic neuropathy and GI symptoms are more likely to have rapid gastric emptying than gastroparesis. Gastroenterology 2005;128:A-547.

89.      Ananthakrishnan AN, Attila T, Bajaj JS, Otterson MF, Lipchik RJ, Massey BT, Maloney JF, Komorowski RA, Binion DG. Severe pulmonary toxicity following azathioprine/6-mercaptopurine initiation for the treatment of inflammatory bowel disease: a case series. Gastroenterology 2005;128:A-575.

 90.      Shaker S, Sanjeevi A, Massey BT, Saeian K, Binion D, O’Loughlin C, Shaker R, Komorowski RA, Hogan WJ. Eosinophilic esophagitis in adults: the typical structural and clinical features are absent in many patients. Gastrointest Endosc 2005;61:AB142.

 91.      Knuff DA***, Shaker R, Hogan WJ, Massey BT. Upper esophageal sphincter dysfunction: an alternative explanation for symptoms and signs attributed to laryngopharyngeal reflux. Gastroenterology 2006:130:A-632.

 92.      Garcia M, Massey B, Shaker R, Hogan W. Manometric and endoscopic findings in the symptomatic post-fundoplication and post redo fundoplication patients: do they differ significantly? Gastroenterology 2006:130:A-734.

 93.      Sanjeevi A, Ashwath G, Komorowski R, Massey BT, Shaker R, Hogan WJ. Early recognition and specific medical therapy affects the frequency of esophageal dilatations in patients with eosinophilic esophagitis (EE). Gastrointest Endosc 2006;63:AB128.

 94.      Knuff DA***, Kounev VJ***, Lawal A***, Hogan WJ, Shaker R, Massey BT. Abnormal UES deglutitive function is improved with water swallows compared to that seen with dry swallows. Dysphagia (in press). Oral presentation

95.       Knuff DA***, Hogan WJ, Shaker R, Massey BT. Esophageal motor disturbances are common in patients with UES dysfunction. Dysphagia (in press).

*          Mentored Student

**        Mentored Resident

***      Mentored Fellow

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