Olli Helminen

2.6k total citations
90 papers, 1.1k citations indexed

About

Olli Helminen is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Olli Helminen has authored 90 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 57 papers in Surgery, 42 papers in Pulmonary and Respiratory Medicine and 29 papers in Oncology. Recurrent topics in Olli Helminen's work include Esophageal Cancer Research and Treatment (28 papers), Gastric Cancer Management and Outcomes (24 papers) and Esophageal and GI Pathology (21 papers). Olli Helminen is often cited by papers focused on Esophageal Cancer Research and Treatment (28 papers), Gastric Cancer Management and Outcomes (24 papers) and Esophageal and GI Pathology (21 papers). Olli Helminen collaborates with scholars based in Finland, Sweden and United States. Olli Helminen's co-authors include Joonas H. Kauppila, Heikki Huhta, Juha Saarnio, Tuomo J. Karttunen, Petri Lehenkari, Eero Sihvo, Riitta Veijola, Joni Leppänen, Niko Kemi and Johanna Mrena and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and The Journal of Clinical Endocrinology & Metabolism.

In The Last Decade

Olli Helminen

83 papers receiving 1.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Olli Helminen Finland 20 497 384 319 255 195 90 1.1k
Salvatore Vieni Italy 17 295 0.6× 374 1.0× 149 0.5× 190 0.7× 54 0.3× 58 1.1k
Claudia Parisi Italy 18 369 0.7× 342 0.9× 233 0.7× 145 0.6× 93 0.5× 47 1.2k
Rachele Del Sordo Italy 16 226 0.5× 245 0.6× 178 0.6× 80 0.3× 78 0.4× 63 865
Shigeki Tomita Japan 18 357 0.7× 551 1.4× 230 0.7× 246 1.0× 140 0.7× 100 1.2k
Stefan Stremitzer Austria 22 450 0.9× 563 1.5× 288 0.9× 132 0.5× 28 0.1× 76 1.2k
David Golovsky Australia 18 312 0.6× 258 0.7× 658 2.1× 119 0.5× 258 1.3× 27 1.4k
Fujitsugu Matsubara Japan 21 428 0.9× 484 1.3× 271 0.8× 102 0.4× 127 0.7× 83 1.3k
Satoshi Yasuda Japan 16 285 0.6× 643 1.7× 304 1.0× 305 1.2× 36 0.2× 96 1.4k
E. Mackay United Kingdom 14 491 1.0× 206 0.5× 275 0.9× 375 1.5× 634 3.3× 23 1.4k
Benno Mann Germany 18 323 0.6× 318 0.8× 147 0.5× 88 0.3× 52 0.3× 34 1.1k

Countries citing papers authored by Olli Helminen

Since Specialization
Citations

This map shows the geographic impact of Olli Helminen'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 Olli Helminen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Olli Helminen more than expected).

Fields of papers citing papers by Olli Helminen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Olli Helminen. 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 Olli Helminen. The network helps show where Olli Helminen may publish in the future.

Co-authorship network of co-authors of Olli Helminen

This figure shows the co-authorship network connecting the top 25 collaborators of Olli Helminen. A scholar is included among the top collaborators of Olli Helminen 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 Olli Helminen. Olli Helminen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Räsänen, Jari, Olli Helminen, Mika Helmiö, et al.. (2025). Surgical complications after minimally invasive oesophagectomy compared to open oesophagectomy for oesophageal cancer: A population-based, nationwide study in Finland. European Journal of Surgical Oncology. 51(7). 110093–110093.
2.
Noort, Vincent van der, Valesca P. Retèl, Irene E.G. van Hellemond, et al.. (2025). 2096MO Systemic therapy, gastrectomy and CRS/HIPEC vs systemic therapy alone for gastric cancer with limited peritoneal dissemination: Results of the randomised PERISCOPE II trial. Annals of Oncology. 36. S1102–S1103.
3.
Sirniö, Päivi, Anne Tuomisto, Maarit Ahtiainen, et al.. (2025). CDX2 and SATB2 loss are associated with myeloid cell infiltration and poor survival in colorectal cancer. Cancer Immunology Immunotherapy. 74(4). 111–111. 1 indexed citations
4.
Väyrynen, Sara A., Teijo Kuopio, Maarit Ahtiainen, et al.. (2024). Multiplexed analysis of macrophage polarisation in pulmonary metastases of microsatellite stable colorectal cancer. Cancer Immunology Immunotherapy. 73(3). 59–59. 1 indexed citations
5.
Uimonen, Mikko, Olli Helminen, Eero Sihvo, et al.. (2024). Optimal lymph node yield in oesophagectomy for oesophageal cancer: a nationwide population-based study. European Journal of Cardio-Thoracic Surgery. 65(3). 3 indexed citations
6.
Härkönen, Jouni, Sara A. Väyrynen, Maarit Ahtiainen, et al.. (2024). Quantitative Multiplexed Analysis of Indoleamine 2,3-Dioxygenase (IDO) and Arginase-1 (ARG1) Expression and Myeloid Cell Infiltration in Colorectal Cancer. Modern Pathology. 37(4). 100450–100450. 4 indexed citations
7.
Rintala, Jukka, Juha P. Väyrynen, Jan Böhm, et al.. (2022). Monocarboxylate Transporters 1 and 4 and Prognosis in Small Bowel Neuroendocrine Tumors. Cancers. 14(10). 2552–2552. 3 indexed citations
8.
9.
Helminen, Olli, Mika Helmiö, Heikki Huhta, et al.. (2022). Long-Term Survival After Transhiatal Versus Transthoracic Esophagectomy: A Population-Based Nationwide Study in Finland. Annals of Surgical Oncology. 29(13). 8158–8167. 4 indexed citations
10.
Huhta, Heikki, et al.. (2021). Hospital volume and outcomes of pancreatic cancer: a Finnish population-based nationwide study. HPB. 24(6). 841–847. 8 indexed citations
11.
Helminen, Olli, et al.. (2021). Exercise capacity in the stair-climbing test predicts outcomes of operable esophageal cancer in minimally invasive era. European Journal of Surgical Oncology. 48(3). 589–596. 6 indexed citations
12.
Kemi, Niko, Juha P. Väyrynen, Olli Helminen, et al.. (2020). Immune Cell Infiltrate and Prognosis in Gastric Cancer. Cancers. 12(12). 3604–3604. 14 indexed citations
13.
Kemi, Niko, et al.. (2020). Tumour budding and tumour–stroma ratio in hepatocellular carcinoma. British Journal of Cancer. 123(1). 38–45. 23 indexed citations
14.
15.
Huhta, Heikki, Olli Helminen, Seppo Parkkila, et al.. (2018). Carbonic anhydrases II, IX, and XII in Barrett’s esophagus and adenocarcinoma. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 473(5). 567–575. 10 indexed citations
16.
Leppänen, Joni, Olli Helminen, Heikki Huhta, et al.. (2018). Weak HIF-1alpha expression indicates poor prognosis in resectable pancreatic ductal adenocarcinoma. World Journal of Surgical Oncology. 16(1). 127–127. 8 indexed citations
17.
Leppänen, Joni, Olli Helminen, Heikki Huhta, et al.. (2017). High toll-like receptor (TLR) 9 expression is associated with better prognosis in surgically treated pancreatic cancer patients. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 470(4). 401–410. 25 indexed citations
18.
Helminen, Olli, Heikki Huhta, Petri Lehenkari, et al.. (2016). Nucleic acid-sensing toll-like receptors 3, 7 and 8 in esophageal epithelium, barrett’s esophagus, dysplasia and adenocarcinoma. OncoImmunology. 5(5). e1127495–e1127495. 16 indexed citations
19.
Helminen, Olli, Tytti Pokka, Jorma Ilonen, et al.. (2015). OGTT and random plasma glucose in the prediction of type 1 diabetes and time to diagnosis. Diabetologia. 58(8). 1787–1796. 42 indexed citations
20.
Helminen, Olli, Heikki Huhta, Heikki Takala, et al.. (2013). Increased Toll-like receptor 5 expression indicates esophageal columnar dysplasia. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 464(1). 11–18. 28 indexed citations

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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