Research Article

	Aetiology and natural history of primary sclerosing cholangitis--a decade of progress? R W Chapman Gut 1991; 32: 1433-1435. doi:10.1136/gut.32.12.1433 [PDF] [Request Permissions]
	Relations among autonomic nerve dysfunction, oesophageal motility, and gastric emptying in gastro-oesophageal reflux disease. K M Cunningham, M Horowitz, P S Riddell, G J Maddern, J C Myers, R H Holloway, J M Wishart, and G G Jamieson Gut 1991; 32: 1436-1440. doi:10.1136/gut.32.12.1436 [Abstract] [PDF] [Request Permissions]
	Only patients with dysplasia progress to adenocarcinoma in Barrett's oesophagus. M Miros, P Kerlin, and N Walker Gut 1991; 32: 1441-1446. doi:10.1136/gut.32.12.1441 [Abstract] [PDF] [Request Permissions]
	Gastric carcinogenesis in the rat induced by duodenogastric reflux without carcinogens: morphology, mucin histochemistry, polyamine metabolism, and labelling index. P R Taylor, R C Mason, M I Filipe, S Vaja, D C Hanley, G M Murphy, R H Dowling, and I McColl Gut 1991; 32: 1447-1454. doi:10.1136/gut.32.12.1447 [Abstract] [PDF] [Request Permissions]
	Rebound intragastric hyperacidity after abrupt withdrawal of histamine H2 receptor blockade. C U Nwokolo, J T Smith, A M Sawyerr, and R E Pounder Gut 1991; 32: 1455-1460. doi:10.1136/gut.32.12.1455 [Abstract] [PDF] [Request Permissions]
	Simplified single sample 13Carbon urea breath test for Helicobacter pylori: comparison with histology, culture, and ELISA serology. R P Logan, R J Polson, J J Misiewicz, G Rao, N Q Karim, D Newell, P Johnson, J Wadsworth, M M Walker, and J H Baron Gut 1991; 32: 1461-1464. doi:10.1136/gut.32.12.1461 [Abstract] [PDF] [Request Permissions]
	Gastric cancer associated structure in mucus glycoproteins shown as a clinically useful marker. I Häkkinen, T Nevalainen, R Paasivuo, P Partanen, K Seppälä, and P Sipponen Gut 1991; 32: 1465-1469. doi:10.1136/gut.32.12.1465 [Abstract] [PDF] [Request Permissions]
	Increased intestinal permeability in ankylosing spondylitis--primary lesion or drug effect? A J Morris, C W Howden, C Robertson, A Duncan, H Torley, R D Sturrock, and R I Russell Gut 1991; 32: 1470-1472. doi:10.1136/gut.32.12.1470 [Abstract] [PDF] [Request Permissions]
	Mucosal tumour necrosis factor alpha and interleukin-6 in patients with Helicobacter pylori associated gastritis. J E Crabtree, T M Shallcross, R V Heatley, and J I Wyatt Gut 1991; 32: 1473-1477. doi:10.1136/gut.32.12.1473 [Abstract] [PDF] [Request Permissions]
	Plasma precursor amino acids of central nervous system monoamines in children with coeliac disease. A Hernanz and I Polanco Gut 1991; 32: 1478-1481. doi:10.1136/gut.32.12.1478 [Abstract] [PDF] [Request Permissions]
	Postoperative changes in collagen synthesis in intestinal anastomoses of the rat: differences between small and large bowel. M F Martens and T Hendriks Gut 1991; 32: 1482-1487. doi:10.1136/gut.32.12.1482 [Abstract] [PDF] [Request Permissions]
	Effects of ileal resection on biliary lipids and bile acid composition in patients with Crohn's disease. A Lapidus and K Einarsson Gut 1991; 32: 1488-1491. doi:10.1136/gut.32.12.1488 [Abstract] [PDF] [Request Permissions]
	Controlled trial comparing two types of enteral nutrition in treatment of active Crohn's disease: elemental versus polymeric diet. D Rigaud, J Cosnes, Y Le Quintrec, E René, J P Gendre, and M Mignon Gut 1991; 32: 1492-1497. doi:10.1136/gut.32.12.1492 [Abstract] [PDF] [Request Permissions]
	Competition for hydrogen by human faecal bacteria: evidence for the predominance of methane producing bacteria. A Strocchi, J K Furne, C J Ellis, and M D Levitt Gut 1991; 32: 1498-1501. doi:10.1136/gut.32.12.1498 [Abstract] [PDF] [Request Permissions]
	Value of positive technetium-99m leucocyte scans in predicting intestinal inflammation. P Gibson, M Lichtenstein, N Salehi, G Hebbard, and J Andrews Gut 1991; 32: 1502-1507. doi:10.1136/gut.32.12.1502 [Abstract] [PDF] [Request Permissions]
	Distribution of Ha-ras alleles in patients with colorectal cancer and Crohn's disease. R Klingel, P Mittelstaedt, W G Dippold, and K H Meyer zum Büschenfelde Gut 1991; 32: 1508-1513. doi:10.1136/gut.32.12.1508 [Abstract] [PDF] [Request Permissions]
	Histopathological evaluation of colonic mucosal biopsy specimens in chronic inflammatory bowel disease: diagnostic implications. C A Seldenrijk, B C Morson, S G Meuwissen, N W Schipper, J Lindeman, and C J Meijer Gut 1991; 32: 1514-1520. doi:10.1136/gut.32.12.1514 [Abstract] [PDF] [Request Permissions]
	Dysplasia and carcinoma in longstanding ulcerative colitis: an endoscopic and histological surveillance programme. M Leidenius, I Kellokumpu, A Husa, M Riihelä, and P Sipponen Gut 1991; 32: 1521-1525. doi:10.1136/gut.32.12.1521 [Abstract] [PDF] [Request Permissions]
	Risk factors for extensive ulcerative colitis and ulcerative proctitis: a population based case-control study. S M Samuelsson, A Ekbom, M Zack, C G Helmick, and H O Adami Gut 1991; 32: 1526-1530. doi:10.1136/gut.32.12.1526 [Abstract] [PDF] [Request Permissions]
	High circulating concentrations of interleukin-6 in active Crohn's disease but not ulcerative colitis. Y R Mahida, L Kurlac, A Gallagher, and C J Hawkey Gut 1991; 32: 1531-1534. doi:10.1136/gut.32.12.1531 [Abstract] [PDF] [Request Permissions]
	Small bowel gas in severe ulcerative colitis. C N Chew, D J Nolan, and D P Jewell Gut 1991; 32: 1535-1537. doi:10.1136/gut.32.12.1535 [Abstract] [PDF] [Request Permissions]
	Colectomy for idiopathic megarectum and megacolon. G Stabile, M A Kamm, P R Hawley, and J E Lennard-Jones Gut 1991; 32: 1538-1540. doi:10.1136/gut.32.12.1538 [Abstract] [PDF] [Request Permissions]
	Wilson's disease in Scotland. R H Park, P McCabe, G S Fell, and R I Russell Gut 1991; 32: 1541-1545. doi:10.1136/gut.32.12.1541 [Abstract] [PDF] [Request Permissions]
	Glutathione S-transferases in human liver cancer. P C Hayes, L May, J D Hayes, and D J Harrison Gut 1991; 32: 1546-1549. doi:10.1136/gut.32.12.1546 [Abstract] [PDF] [Request Permissions]
	Dissolution of cholesterol gall stones using methyltertbutyl ether: a safe effective treatment. J McNulty, A Chua, J Keating, S Ah-Kion, D G Weir, and P W Keeling Gut 1991; 32: 1550-1553. doi:10.1136/gut.32.12.1550 [Abstract] [PDF] [Request Permissions]
	Nucleation time of gall bladder bile in gall stone patients: influence of bile acid treatment. S Sahlin, J Ahlberg, B Angelin, E Reihnér, and K Einarsson Gut 1991; 32: 1554-1557. doi:10.1136/gut.32.12.1554 [Abstract] [PDF] [Request Permissions]
	Adenoma of the ampulla of Vater: putative precancerous lesion. K Yamaguchi and M Enjoji Gut 1991; 32: 1558-1561. doi:10.1136/gut.32.12.1558 [Abstract] [PDF] [Request Permissions]
	Wire guided balloon assisted endoscopic biliary stent exchange. D F Martin Gut 1991; 32: 1562-1564. doi:10.1136/gut.32.12.1562 [Abstract] [PDF] [Request Permissions]
	Hypertrophic gastropathy with gastric adenocarcinoma: Menetrier's disease and lymphocytic gastritis? J F Mosnier, J F Flejou, G Amouyal, B Gayet, G Molas, D Henin, and F Potet Gut 1991; 32: 1565-1567. doi:10.1136/gut.32.12.1565 [Abstract] [PDF] [Request Permissions]
	Benign lymphangioma of the jejunal mesentery: an unusual cause of small bowel obstruction. W J Campbell, S T Irwin, and J D Biggart Gut 1991; 32: 1568. doi:10.1136/gut.32.12.1568 [Abstract] [PDF] [Request Permissions]

Letter

	Serum and tissue autoantibodies to colonic epithelium in ulcerative colitis. K M Das Gut 1991; 32: 1569. doi:10.1136/gut.32.12.1569 [PDF] [Request Permissions]
	Oesophageal complications in epidermolysis bullosa. S P Travis, R A Eady, and R P Thompson Gut 1991; 32: 1569-1570. doi:10.1136/gut.32.12.1569-b [PDF] [Request Permissions]
	Limitations of faecal chymotrypsin as a screening test. G Cavallini and L Benini Gut 1991; 32: 1570. doi:10.1136/gut.32.12.1570 [PDF] [Request Permissions]

Letters to the Editor

	Reply J A Snook and D P Jewell Gut 1991; 32: 1569. doi:10.1136/gut.32.12.1569-a [PDF] [Request Permissions]
	Reply L Riedel and I Segal Gut 1991; 32: 1570. doi:10.1136/gut.32.12.1570-a [PDF] [Request Permissions]

Book Review

	Progress in hepatic, biliary and pancreatic surgery Robert Shields Gut 1991; 32: 1570-1571. doi:10.1136/gut.32.12.1570-b [PDF] [Request Permissions]
	Gastrointestinal physiology D Grundy Gut 1991; 32: 1571. doi:10.1136/gut.32.12.1571 [PDF] [Request Permissions]
	Non-responders in gastroenterology: causes and treatment J H Baron Gut 1991; 32: 1571. doi:10.1136/gut.32.12.1571-a [PDF] [Request Permissions]