Reijo Haapiainen

5.8k total citations
121 papers, 4.4k citations indexed

About

Reijo Haapiainen is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Reijo Haapiainen has authored 121 papers receiving a total of 4.4k indexed citations (citations by other indexed papers that have themselves been cited), including 89 papers in Surgery, 35 papers in Pulmonary and Respiratory Medicine and 32 papers in Oncology. Recurrent topics in Reijo Haapiainen's work include Pancreatitis Pathology and Treatment (47 papers), Pancreatic and Hepatic Oncology Research (23 papers) and Abdominal Trauma and Injuries (16 papers). Reijo Haapiainen is often cited by papers focused on Pancreatitis Pathology and Treatment (47 papers), Pancreatic and Hepatic Oncology Research (23 papers) and Abdominal Trauma and Injuries (16 papers). Reijo Haapiainen collaborates with scholars based in Finland, United States and Egypt. Reijo Haapiainen's co-authors include Pauli Puolakkainen, Ari Leppäniemi, Esko Kemppainen, E. Kivilaakso, V Sainio, A Sivula, Petri Voutilainen, Johan Hedström, Ulf‐Håkan Stenman and Arto Kokkola and has published in prestigious journals such as New England Journal of Medicine, The Lancet and Gastroenterology.

In The Last Decade

Reijo Haapiainen

119 papers receiving 4.1k citations

Peers

Countries citing papers authored by Reijo Haapiainen

Since Specialization

Citations

This map shows the geographic impact of Reijo Haapiainen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Reijo Haapiainen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Reijo Haapiainen more than expected).

Fields of papers citing papers by Reijo Haapiainen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Reijo Haapiainen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Reijo Haapiainen. The network helps show where Reijo Haapiainen may publish in the future.

Co-authorship network of co-authors of Reijo Haapiainen

This figure shows the co-authorship network connecting the top 25 collaborators of Reijo Haapiainen. A scholar is included among the top collaborators of Reijo Haapiainen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Reijo Haapiainen. Reijo Haapiainen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	VEGF-C and COX-2 expression in papillary thyroid cancer 2006 ·Endocrine Related Cancer ·Päivi Siironen, Ari Ristimäki, Kirsi Narko, Stig Nordling, Johanna Louhimo, Sture Andersson, Reijo Haapiainen, Caj Haglund	38
2	Immunohistochemical Expression of Bcl-2, Ki-67, and p21 in Patients with Papillary Thyroid Cancer 2005 ·Tumor Biology ·Päivi Siironen, Stig Nordling, Johanna Louhimo, Reijo Haapiainen, Caj Haglund	30
3	Proinflammatory effects of pancreatic elastase are mediated through TLR4 and NF-κB 2004 ·Biochemical and Biophysical Research Communications ·Antti J. Hietaranta, Harri Mustonen, Pauli Puolakkainen, Reijo Haapiainen, Esko Kemppainen	53
4	Trypsinogen-2 and trypsinogen activation peptide (TAP) in urine of patients with acute pancreatitis 2003 ·Journal of Surgical Research ·Marko Lempinen, Ulf‐Håkan Stenman, Patrik Finne, Pauli Puolakkainen, Reijo Haapiainen, Esko Kemppainen	25
5	Predicting fatal outcome in the early phase of severe acute pancreatitis by using novel prognostic models 2003 ·Pancreatology ·Kimmo I. Halonen, Ari Leppäniemi, Johan Lundin, Pauli Puolakkainen, Esko Kemppainen, Reijo Haapiainen	55
6	Development of Barrett's Esophagus after ‘Spontaneous’ Healing of Atrophic Corpus Gastritis 2003 ·Helicobacter ·Arto Kokkola, P. Sipponen, Reijo Haapiainen, Hilpi Rautelin, Marja‐Liisa Karjalainen‐Lindsberg, Pauli Puolakkainen	4
7	Long-term health-related quality of life in survivors of severe acute pancreatitis 2003 ·Intensive Care Medicine ·Kimmo I. Halonen, Ville Pettilä, Ari Leppäniemi, Esko Kemppainen, Pauli Puolakkainen, Reijo Haapiainen	50
8	The effect of Helicobacter pylori eradication on the natural course of atrophic gastritis with dysplasia 2002 ·Alimentary Pharmacology & Therapeutics ·Arto Kokkola, P. Sipponen, Hilpi Rautelin, Matti Härkönen, Timo U. Kosunen, Reijo Haapiainen, Pauli Puolakkainen	86
9	Laparoscopic adrenalectomy for primary aldosteronism: clinical experience in 12 patients. 1999 ·PubMed ·Jukka Sirén, (unknown), K. Huikuri, A Sivula, Reijo Haapiainen	8
10	Diagnosis of acute pancreatitis. 1998 ·PubMed ·Esko Kemppainen, Pauli Puolakkainen, Ari Leppäniemi, Antti J. Hietaranta, Juha Grönroos, Reijo Haapiainen	10
11	Increased serum trypsinogen 2 and trypsin 2-α ₁ antitrypsin complex values identify endoscopic retrograde cholangiopancreatography induced pancreatitis with high accuracy 1997 ·Gut ·Esko Kemppainen, Johan Hedström, Pauli Puolakkainen, Jorma Halttunen, V Sainio, Reijo Haapiainen, E. Kivilaakso, Ulf‐Håkan Stenman	50
12	Urinary Trypsinogen-2 Test Strip in Detecting ERCP-Induced Pancreatitis 1997 ·Endoscopy ·Esko Kemppainen, Johan Hedström, Pauli Puolakkainen, Jorma Halttunen, V Sainio, Reijo Haapiainen, Ulf‐Håkan Stenman	28
13	Urinary trypsinogen-2 test strip for acute pancreatitis 1996 ·The Lancet ·(unknown), (unknown), (unknown), (unknown), S Tikanoja, Reijo Haapiainen, (unknown)	72
14	Serum Trypsinogen-2 in the Prediction of Outcome in Acute Necrotizing Pancreatitis 1996 ·Scandinavian Journal of Gastroenterology ·V Sainio, Pauli Puolakkainen, Esko Kemppainen, Johan Hedström, Reijo Haapiainen, L. Kivisaari, Ulf‐Håkan Stenman, T. Schröder, E. Kivilaakso	41
15	Serum trypsinogen-2 and trypsin-2-α1-antitrypsin complex in malignant and benign digestive-tract diseases. Preferential elevation in patients with cholangiocarcinomas 1996 ·International Journal of Cancer ·Johan Hedström, Caj Haglund, Reijo Haapiainen, Ulf‐Håkan Stenman	44
16	Diagnostic Evaluation and Aggressive Surgical Approach in Bleeding Pseudoaneurysms Associated with Pancreatic Pseudocysts 1991 ·Scandinavian Journal of Gastroenterology ·(unknown), Reijo Haapiainen, L. Kivisaari, T. Schröder	35
17	Comparison of Primary Orchiectomy and Polyoestradiol Phosphate in the Treatment of Advanced Prostatic Cancer 1990 ·British Journal of Urology ·Reijo Haapiainen, S. Rannikko, O Alfthan	9
18	Serum Acid Phosphatase in Patients with Localised Prostatic Cancer, Benign Prostatic Hyperplasia or Normal Prostates 1990 ·British Journal of Urology ·Jari Salo, S. Rannikko, Reijo Haapiainen	3
19	High Dose Polyoestradiol Phosphate with and without Acetosalicylic Acid versus Orchiectomy in the Treatment of Prostatic Cancer 1989 ·British Journal of Urology ·J. Aro, Reijo Haapiainen, S. Rannikko, O Alfthan	12
20	Diagnosis and Treatment of Patients with Renal Trauma 1989 ·British Journal of Urology ·Ari Leppäniemi, Reijo Haapiainen, Timo Lehtonen	17

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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