Publications by authors named "Helka Sahi"

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Tumor RNA Sequencing Identifies a Group of Patients with Mycosis Fungoides with Failure of Skin-Directed Therapies.
Marjaana Häyrinen, Hanna-Riikka Teppo, Liisa Väkevä, Annamari Ranki, Henry J Barton, Helka Sahi

J Invest Dermatol· March 2025

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Pulsed Dye Laser-mediated Photodynamic Therapy is Less Effective than Conventional Photodynamic Therapy for Actinic Field Cancerization: A Randomized Half-side Comparative Study.
Vivian Lindholm, Sari Pitkänen, Marika Schröder, Sonja Hahtola, Helka Sahi

Acta Derm Venereol· February 2021

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Merkel Cell Carcinoma Treatment in Finland in 1986-2016-A Real-World Data Study.
Helka Sahi, Jenny Their, Mika Gissler, Virve Koljonen

Cancers (Basel)· May 2020

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The expression of terminal deoxynucleotidyl transferase and paired box gene 5 in Merkel cell carcinomas and its relation to the presence of Merkel cell polyomavirus DNA.
Benjamin Johansson, Helka Sahi, Virve Koljonen, Tom Böhling

J Cutan Pathol· January 2019

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History of chronic inflammatory disorders increases the risk of Merkel cell carcinoma, but does not correlate with Merkel cell polyomavirus infection.
Helka Sahi, Harri Sihto, Miia Artama, Virve Koljonen, Tom Böhling

Br J Cancer· January 2017

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Joint occurrence of Merkel cell carcinoma and non-Hodgkin lymphomas in four Nordic countries.
Virve Koljonen, Matti Rantanen, Helka Sahi, Lene Mellemkjær, Bo Terning Hansen

Leuk Lymphoma· September 2016

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Post-transplant Merkel Cell Carcinoma.
Virve Koljonen, Helka Sahi, Tom Böhling, Heikki Mäkisalo

Acta Derm Venereol· May 2016

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miRNA-34a underexpressed in Merkel cell polyomavirus-negative Merkel cell carcinoma.
Tuukka Veija, Helka Sahi, Virve Koljonen, Tom Bohling, Sakari Knuutila

Virchows Arch· March 2015

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RB1 gene in Merkel cell carcinoma: hypermethylation in all tumors and concurrent heterozygous deletions in the polyomavirus-negative subgroup.
Helka Sahi, Suvi Savola, Harri Sihto, Virve Koljonen, Tom Bohling

APMIS· December 2014

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Bcl-2 expression indicates better prognosis of Merkel cell carcinoma regardless of the presence of Merkel cell polyomavirus.
Helka Sahi, Virve Koljonen, Heli Kavola, Caj Haglund, Erkki Tukiainen

Virchows Arch· November 2012

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Increased incidence of Merkel cell carcinoma among younger statin users.
Helka Sahi, Virve Koljonen, Tom Böhling, Pertti J Neuvonen, Harri Vainio

Cancer Epidemiol· October 2012

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