Publications 2023

Anundsen TK, Førland DT, Johannessen HO, Johnson E (2023)
Outcome after stent and endoscopic vacuum therapy-based treatment for postemetic esophageal rupture
Scand J Gastroenterol, 59 (1), 1-6
DOI 10.1080/00365521.2023.2248537, PubMed 37592384

Nilsson K, Klevebro F, Sunde B, Rouvelas I, Lindblad M, Szabo E, Halldestam I, Smedh U, Wallner B, Johansson J, Johnsen G, Aahlin EK, Johannessen HO, Alexandersson von Döbeln G, Hjortland GO, Wang N, Shang Y, Borg D, Quaas A, Bartella I, Bruns C, Schröder W, Nilsson M (2023)
Oncological outcomes of standard versus prolonged time to surgery after neoadjuvant chemoradiotherapy for oesophageal cancer in the multicentre, randomised, controlled NeoRes II trial
Ann Oncol, 34 (11), 1015-1024
DOI 10.1016/j.annonc.2023.08.010, PubMed 37657554

Publications 2022

Hauge T, Førland DT, Johannessen HO, Johnson E (2022)
Short- and long-term outcomes in patients operated with total minimally invasive esophagectomy for esophageal cancer
Dis Esophagus, 35 (5)
DOI 10.1093/dote/doab061, PubMed 34491299

Mala T, Førland D, Skagemo C, Glomsaker T, Johannessen HO, Johnson E (2022)
Early experience with total robotic D2 gastrectomy in a low incidence region: surgical perspectives
BMC Surg, 22 (1), 137
DOI 10.1186/s12893-022-01576-1, PubMed 35397558

Publications 2021

Haug HM, Carlsen E, Johannessen HO, Johnson E (2021)
Short-, long-, and very long-term results of secondary anterior sphincteroplasty in 20 patients with obstetric injury
Int J Colorectal Dis, 36 (12), 2775-2778
DOI 10.1007/s00384-021-04026-1, PubMed 34528117

Publications 2020

Durbeck A, Johannessen HO, Drolsum A, Johnson E (2020)
Very long-term outcome after resection rectopexy for internal rectal intussusception
Scand J Gastroenterol, 56 (1), 122-127
DOI 10.1080/00365521.2020.1853221, PubMed 33253596

Hauge T, Amdal CD, Falk RS, Johannessen HO, Johnson E (2020)
Long-term outcome in patients operated with hybrid esophagectomy for esophageal cancer - a cohort study
Acta Oncol, 59 (7), 859-865
DOI 10.1080/0284186X.2020.1750694, PubMed 32324079

Mala T, Forland DT, Vetti HH, Skagemo CU, Johannessen HO, Johnson E (2020)
Gastric adenocarcinoma and proximal ventricular polyposis - a rare form of hereditary stomach cancer
Tidsskr. Nor. Laegeforen., 140 (7), 676-679

Mala T, Førland DT, Vetti HH, Skagemo CU, Johannessen HO, Johnson E (2020)
[Gastric adenocarcinoma and proximal polyposis of the stomach – a rare form of hereditary gastric cancer]
Tidsskr Nor Laegeforen, 140 (7)
DOI 10.4045/tidsskr.19.0480, PubMed 32378851

Nilsson K, Klevebro F, Rouvelas I, Lindblad M, Szabo E, Halldestam I, Smedh U, Wallner B, Johansson J, Johnsen G, Aahlin EK, Johannessen HO, Hjortland GO, Bartella I, Schröder W, Bruns C, Nilsson M (2020)
Surgical Morbidity and Mortality From the Multicenter Randomized Controlled NeoRes II Trial: Standard Versus Prolonged Time to Surgery After Neoadjuvant Chemoradiotherapy for Esophageal Cancer
Ann Surg, 272 (5), 684-689
DOI 10.1097/SLA.0000000000004340, PubMed 32833767

Safi N, Johannessen HO, Medhus AW, Mala T, Kazmi SSH (2020)
Laser Doppler Flowmetry and Visible Light Spectroscopy of the Gastric Tube During Minimally Invasive Esophagectomy
Vasc Health Risk Manag, 16, 497-505
DOI 10.2147/VHRM.S269138, PubMed 33273819

Publications 2019

Hauge T, Kleven OC, Johnson E, Hofstad B, Johannessen HO (2019)
Outcome after iatrogenic esophageal perforation
Scand J Gastroenterol, 54 (2), 140-144
DOI 10.1080/00365521.2019.1575464, PubMed 30857441

von Döbeln GA, Klevebro F, Jacobsen AB, Johannessen HO, Nielsen NH, Johnsen G, Hatlevoll I, Glenjen NI, Friesland S, Lundell L, Yu J, Nilsson M (2019)
Neoadjuvant chemotherapy versus neoadjuvant chemoradiotherapy for cancer of the esophagus or gastroesophageal junction: long-term results of a randomized clinical trial
Dis Esophagus, 32 (2)
DOI 10.1093/dote/doy078, PubMed 30137281

Publications 2018

Haug HM, Johnson E, Mala T, Førland DT, Søvik TT, Johannessen HO (2018)
Incarcerated paraesophageal hernia complicated by pancreatic damage and unusual comorbidity: Two retrospective case series
Int J Surg Case Rep, 54, 75-78
DOI 10.1016/j.ijscr.2018.11.064, PubMed 30529949

Hauge T, Kleven OC, Johnson E, Hofstad B, Johannessen HO (2018)
Outcome after stenting and débridement for spontaneous esophageal rupture
Scand J Gastroenterol, 53 (4), 398-402
DOI 10.1080/00365521.2018.1448886, PubMed 29523026

Hauge T, Kleven OC, Johnson E, Hofstad B, Johannessen HO (2018)
Outcome after accidental food bolus-induced esophageal perforation
Scand J Gastroenterol, 53 (8), 905-909
DOI 10.1080/00365521.2018.1495760, PubMed 30231806

Mala T, Johannessen HO, Forland D, Jacobsen TH, Johnson E (2018)
Laparoscopic resection of ventricular cancer at Oslo University Hospital, Ulleval 2015-18
Tidsskr. Nor. Laegeforen., 138 (18), 1718-1723

Mala T, Johannessen HO, Førland D, Jacobsen TH, Johnson E (2018)
[Laparascopic resection for gastric cancer at Oslo University Hospital, Ullevål 2015–18]
Tidsskr Nor Laegeforen, 138 (18)
DOI 10.4045/tidsskr.18.0404, PubMed 30421737

Publications 2017

Farnes I, Johnson E, Johannessen HO (2017)
Management of gastric conduit retention following hybrid and minimally invasive esophagectomy for esophageal cancer: Two retrospective case series
Int J Surg Case Rep, 41, 505-510
DOI 10.1016/j.ijscr.2017.11.040, PubMed 29546028

Publications 2016

Grøtting MS, Løberg EM, Johannessen HO, Johnson E (2016)
Resection for oesophageal cancer - complications and survival
Tidsskr Nor Laegeforen, 136 (9), 809-13
DOI 10.4045/tidsskr.15.1136, PubMed 27221180

Publications 2015

Hugin S, Johnson E, Johannessen HO, Hofstad B, Olafsen K, Mellem H (2015)
Gastrobronchial fistula following minimally invasive esophagectomy for esophageal cancer in a patient with myotonic dystrophy: Case report
Int J Surg Case Rep, 17, 31-5
DOI 10.1016/j.ijscr.2015.10.023, PubMed 26520033

Publications 2014

Hauge T, Johnson E, Sandstad O, Johannessen HO, Trondsen E (2014)
Surgical treatment of epiphrenic oesophageal diverticulum
Tidsskr Nor Laegeforen, 134 (10), 1047-50
DOI 10.4045/tidsskr.13.1336, PubMed 24865729

Publications 2012

Johnson E, Kjellevold K, Johannessen HO, Drolsum A (2012)
Long-term outcome after resection rectopexy for internal rectal intussusception
ISRN Gastroenterol, 2012, 824671
DOI 10.5402/2012/824671, PubMed 23346411

Publications 2011

Flatmark K, Borgen E, Nesland JM, Rasmussen H, Johannessen HO, Bukholm I, Rosales R, Hårklau L, Jacobsen HJ, Sandstad B, Boye K, Fodstad Ø (2011)
Disseminated tumour cells as a prognostic biomarker in colorectal cancer
Br J Cancer, 104 (9), 1434-9
DOI 10.1038/bjc.2011.97, PubMed 21448171

Wik TA, Hjorthaug JO, Johannessen HO, Johnson E (2011)
Sigmoidostomy-related parastomal hernia
Scand J Surg, 100 (3), 186-9
DOI 10.1177/145749691110000309, PubMed 22108747

Publications 2010

Johnson E, Carlsen E, Steen TB, Backer Hjorthaug JO, Eriksen MT, Johannessen HO (2010)
Short- and long-term results of secondary anterior sphincteroplasty in 33 patients with obstetric injury
Acta Obstet Gynecol Scand, 89 (11), 1466-72
DOI 10.3109/00016349.2010.519019, PubMed 20955101

Kristjansson SR, Jordhoy MS, Nesbakken A, Skovlund E, Bakka A, Johannessen HO, Wyller TB (2010)
Which elements of a comprehensive geriatric assessment (CGA) predict post-operative complications and early mortality after colorectal cancer surgery?
J. Geriatr. Oncol., 1 (2), 57-65
DOI 10.1016/j.jgo.2010.06.001

Publications 2009

Kristjansson SR, Nesbakken A, Jordhøy MS, Skovlund E, Audisio RA, Johannessen HO, Bakka A, Wyller TB (2009)
Comprehensive geriatric assessment can predict complications in elderly patients after elective surgery for colorectal cancer: a prospective observational cohort study
Crit Rev Oncol Hematol, 76 (3), 208-17
DOI 10.1016/j.critrevonc.2009.11.002, PubMed 20005123

Publications 2008

Gondal G, Johnson E, Johannessen HO, Hofstad B (2008)
[Treatment of oesophageal perforations]
Tidsskr Nor Laegeforen, 128 (9), 1050-2
PubMed 18451885

Langebrekke A, Johannessen HO, Qvigstad E (2008)
[Surgical treatment of endometriosis]
Tidsskr Nor Laegeforen, 128 (13), 1515-8
PubMed 18587458

Publications 2007

Johnson E, Stangeland A, Johannessen HO, Carlsen E (2007)
Resection rectopexy for external rectal prolapse reduces constipation and anal incontinence
Scand J Surg, 96 (1), 56-61
DOI 10.1177/145749690709600111, PubMed 17461314

Publications 2006

Johnson E, Enden T, Noreng HJ, Holck-Steen A, Gjerlaug BE, Morken T, Johannessen HO, Drolsum A (2006)
Survival and complications after insertion of self-expandable metal stents for malignant oesophageal stenosis
Scand J Gastroenterol, 41 (3), 252-6
DOI 10.1080/00365520500206350, PubMed 16497610

Landsend E, Johnson E, Johannessen HO, Carlsen E (2006)
Long-term outcome after intestinal resection for Crohn's disease
Scand J Gastroenterol, 41 (10), 1204-8
DOI 10.1080/00365520600731018, PubMed 16990206

Langebrekke A, Istre O, Busund B, Johannessen HO, Qvigstad E (2006)
Endoscopic treatment of deep infiltrating endometriosis (DIE) involving the bladder and rectosigmoid colon
Acta Obstet Gynecol Scand, 85 (6), 712-5
DOI 10.1080/00016340500449907, PubMed 16752264

Publications 2005

Johnson E, Gjerlaug BE, Holck-Steen A, Johannessen HO, Carlsen E, Enden T, Noreng HJ, Drolsum A (2005)
[Surgery and stenting for oesophageal cancer]
Tidsskr Nor Laegeforen, 125 (3), 286-8
PubMed 15702148

Publications 2004

Johannessen HO, Johnson E, Clausen T, Mjåland O (2004)
[Pain and rehabilitation after inguinal hernia repair in adult male patients]
Tidsskr Nor Laegeforen, 124 (15), 1916-8
PubMed 15306858

Publications 2003

Landsend E, Johnson E, Johannessen HO, Carlsen E (2003)
[Surgical treatment of anal fissure]
Tidsskr Nor Laegeforen, 123 (23), 3366-7
PubMed 14713969

Publications 2002

Flatmark K, Bjørnland K, Johannessen HO, Hegstad E, Rosales R, Hårklau L, Solhaug JH, Faye RS, Søreide O, Fodstad Ø, Study Group for Micrometastases in BM in Colorectal Cancer (2002)
Immunomagnetic detection of micrometastatic cells in bone marrow of colorectal cancer patients
Clin Cancer Res, 8 (2), 444-9
PubMed 11839662

Johannessen HO (2002)
Radiation tolerance of the rectum: studies of normal tissue damage in a brachytherapy model
In Series of dissertations submitted to the Faculty of Medicine, University of Oslo, Unipub, Oslo, no. 21, 1 b. (flere pag.)
BIBSYS 021419329, ISBN 82-8072-004-9

Johannessen HO, Dale E, Hellebust TP, Olsen DR, Nesland JM, Giercksky KE (2002)
Modeling volume effects of experimental brachytherapy in the rat rectum: uncovering the limitations of a radiobiologic concept
Int J Radiat Oncol Biol Phys, 53 (4), 1014-22
DOI 10.1016/s0360-3016(02)02835-3, PubMed 12095571

Trondsen E, Johannessen HO, Buanes T, Raeder J (2002)
[Outpatient laparoscopic fundoplication for gastroesophageal reflux disease]
Tidsskr Nor Laegeforen, 122 (28), 2692-5
PubMed 12523086

Trondsen E, Johannessen HO, Schou CF, Buanes T (2002)
[Laparoscopic fundoplication for gastroesophageal reflux disease]
Tidsskr Nor Laegeforen, 122 (27), 2598-601
PubMed 12523186

Publications 1996

Johannessen HO, Olsen DR, Giercksky KE (1996)
Development of an experimental model for high dose rate endocavitary irradiation of the rat rectum
Br J Radiol, 69 (826), 946-52
DOI 10.1259/0007-1285-69-826-946, PubMed 9038531