Johanna Mrena

795 total citations
27 papers, 647 citations indexed

About

Johanna Mrena is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Johanna Mrena has authored 27 papers receiving a total of 647 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Surgery, 18 papers in Pulmonary and Respiratory Medicine and 9 papers in Oncology. Recurrent topics in Johanna Mrena's work include Esophageal Cancer Research and Treatment (10 papers), Gastric Cancer Management and Outcomes (9 papers) and Esophageal and GI Pathology (8 papers). Johanna Mrena is often cited by papers focused on Esophageal Cancer Research and Treatment (10 papers), Gastric Cancer Management and Outcomes (9 papers) and Esophageal and GI Pathology (8 papers). Johanna Mrena collaborates with scholars based in Finland, Sweden and United States. Johanna Mrena's co-authors include Arto Kokkola, Caj Haglund, Ari Ristimäki, Alexandra Thiel, Stig Nordling, Jan‐Patrik Wiksten, Ilmo Kellokumpu, Anne Mattila, Olli Helminen and Eero Sihvo and has published in prestigious journals such as Annals of Surgery, Clinical Cancer Research and British Journal of Cancer.

In The Last Decade

Johanna Mrena

27 papers receiving 632 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Johanna Mrena Finland 14 230 224 216 195 178 27 647
S Kinugasa Japan 10 155 0.7× 173 0.8× 178 0.8× 154 0.8× 89 0.5× 14 550
Roy Ehrnström Sweden 13 133 0.6× 82 0.4× 339 1.6× 183 0.9× 206 1.2× 24 615
Alessandro Villanucci Italy 14 128 0.6× 77 0.3× 189 0.9× 209 1.1× 110 0.6× 35 696
Nobuyasu Hayashi Japan 11 78 0.3× 144 0.6× 283 1.3× 188 1.0× 107 0.6× 29 565
Meredith A. Tennis United States 14 135 0.6× 48 0.2× 334 1.5× 203 1.0× 178 1.0× 29 645
Hsi Chin Wu Taiwan 11 203 0.9× 59 0.3× 216 1.0× 130 0.7× 125 0.7× 22 502
Atsushi Maeno Japan 14 187 0.8× 70 0.3× 178 0.8× 104 0.5× 121 0.7× 26 430
Gamal Andre Banat Germany 5 322 1.4× 78 0.3× 260 1.2× 90 0.5× 92 0.5× 6 592
Ramez Andrawis United States 9 383 1.7× 54 0.2× 496 2.3× 163 0.8× 303 1.7× 16 819
Yi Ming Mu China 9 59 0.3× 62 0.3× 405 1.9× 165 0.8× 117 0.7× 11 623

Countries citing papers authored by Johanna Mrena

Since Specialization
Citations

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

Fields of papers citing papers by Johanna Mrena

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Johanna Mrena

This figure shows the co-authorship network connecting the top 25 collaborators of Johanna Mrena. A scholar is included among the top collaborators of Johanna Mrena 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 Johanna Mrena. Johanna Mrena 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.
2.
Uimonen, Mikko, Olli Helminen, Jan Böhm, Johanna Mrena, & Eero Sihvo. (2022). Standard Lymphadenectomy for Esophageal and Lung Cancer: Variability in the Number of Examined Lymph Nodes Among Pathologists and Its Survival Implication. Annals of Surgical Oncology. 30(3). 1587–1595. 4 indexed citations
3.
Huhta, Heikki, Joonas H. Kauppila, Juha Saarnio, et al.. (2022). Increasing Use of PET-CT, Neoadjuvant Treatment, Minimally Invasive Approach and Surgical Radicality in Esophageal Cancer Surgery are Associated with Improved Short- and Long-term Outcomes in Real-World Setting. Journal of Gastrointestinal Surgery. 26(4). 742–749. 1 indexed citations
4.
Helminen, Olli, et al.. (2022). Implementation of Multimodality Therapy and Minimally Invasive Surgery: Short- and Long-term Outcomes of Gastric Cancer Surgery in Medium-Volume Center. Journal of Gastrointestinal Surgery. 26(10). 2061–2069. 5 indexed citations
5.
Kemi, Niko, Juha P. Väyrynen, Olli Helminen, et al.. (2022). Tertiary lymphoid structures and gastric cancer prognosis. Apmis. 131(1). 19–25. 15 indexed citations
6.
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
7.
Helminen, Olli, Joonas H. Kauppila, Fredrik Yannopoulos, et al.. (2021). Minimally invasive esophagectomy learning curves with different types of background experience. Journal of Thoracic Disease. 13(11). 6261–6271. 4 indexed citations
8.
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
9.
Helminen, Olli, Juha P. Väyrynen, Maarit Ahtiainen, et al.. (2020). Immunophenotype based on inflammatory cells, PD-1/PD-L1 signalling pathway and M2 macrophages predicts survival in gastric cancer. British Journal of Cancer. 123(11). 1625–1632. 17 indexed citations
10.
Helminen, Olli, Johanna Mrena, & Eero Sihvo. (2018). Benchmark values for transthoracic esophagectomy are not set as the defined °∞best possible°±°™a validation study. Journal of Thoracic Disease. 10(7). 4085–4093. 13 indexed citations
11.
Helminen, Olli, Johanna Mrena, & Eero Sihvo. (2017). Near-infrared image-guided lymphatic mapping in minimally invasive oesophagectomy of distal oesophageal cancer. European Journal of Cardio-Thoracic Surgery. 52(5). 952–957. 22 indexed citations
12.
Mattila, Anne, Johanna Mrena, & Ilmo Kellokumpu. (2017). Expectant management of gallbladder stones after endoscopic removal of common bile duct stones. International Journal of Surgery. 43. 107–111. 3 indexed citations
13.
14.
Mrena, Johanna. (2015). Surgical care quality and oncologic outcome after D2 gastrectomy for gastric cancer. World Journal of Gastroenterology. 21(47). 13294–13294. 10 indexed citations
15.
Mattila, Anne, et al.. (2014). An audit of short- and long-term outcomes after laparoscopic removal of common bile duct stones in Finland. Surgical Endoscopy. 28(12). 3451–3457. 29 indexed citations
16.
Thiel, Alexandra, Johanna Mrena, & Ari Ristimäki. (2011). Cyclooxygenase-2 and Gastric Cancer. Cancer and Metastasis Reviews. 30(3-4). 387–395. 53 indexed citations
17.
Koskensalo, Selja, Johanna Mrena, Jan‐Patrik Wiksten, et al.. (2010). MMP-7 overexpression is an independent prognostic marker in gastric cancer. Tumor Biology. 31(3). 149–155. 53 indexed citations
18.
Mrena, Johanna, Jan‐Patrik Wiksten, Arto Kokkola, et al.. (2009). COX-2 is associated with proliferation and apoptosis markers and serves as an independent prognostic factor in gastric cancer. Tumor Biology. 31(1). 1–7. 50 indexed citations
19.
Mrena, Johanna, et al.. (2006). MMP-2 but not MMP-9 associated with COX-2 and survival in gastric cancer. Journal of Clinical Pathology. 59(6). 618–623. 48 indexed citations
20.
Mrena, Johanna, Jan‐Patrik Wiksten, Arto Kokkola, et al.. (2006). Prognostic significance of cyclin A in gastric cancer. International Journal of Cancer. 119(8). 1897–1901. 45 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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