Publications by authors named "Birgit Helmchen"

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Gallbladder Volvulus: A Rare Cause of Acute Abdomen in the Elderly.
Daiki Sato, Guillaume Aeby, Birgit M Helmchen, Reint Burger

Cureus· November 2025

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Biopsy-Based Transcriptomics Support Rejection Monitoring Through Repeated Kidney Allograft Biopsies.
Lukas Weidmann, Dusan Harmacek, Ariana Gaspert, Birgit Maria Helmchen, Britta George

Kidney Int Rep· July 2025

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Additional Diagnoses Other Than Rejection in the Kidney Allograft Biopsy: Pitfalls for Biopsy-based Transcript Diagnostics.
Elena Rho, Lukas Weidmann, Raphael Korach, Nicola Bortel, Nicolas Schmid, Birgit Maria Helmchen

Transplant Direct· March 2025

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Perinephric myxoid pseudotumor of fat - histopathological and molecular characterization of 3 cases after renal transplantation.
Christina Schnoz, Marco Bonani, Florian Alexander Huber, Birgit Maria Helmchen, Thomas Fehr

Diagn Pathol· March 2025

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Limitations of biopsy-based transcript diagnostics to detect T-cell-mediated allograft rejection.
Lukas Weidmann, Dusan Harmacek, Kai Castrezana Lopez, Birgit Maria Helmchen, Ariana Gaspert

Nephrol Dial Transplant· February 2025

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HEV ORF2 protein-antibody complex deposits are associated with glomerulonephritis in hepatitis E with reduced immune status.
Anne-Laure Leblond, Birgit Helmchen, Maliki Ankavay, Daniela Lenggenhager, Jasna Jetzer, Fritjof Helmchen

Nat Commun· October 2024

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A Case of Hypocomplementemic Urticarial Vasculitis Syndrome With Severe Renal and Gastrointestinal Involvement.
Lorena Jost, Birgit M Helmchen, Michael Osthoff, Luzia Nigg Calanca

Cureus· October 2024

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Molecular diagnosis of antibody-mediated rejection: Evaluating biopsy-based transcript diagnostics in the presence of donor-specific antibodies but without microvascular inflammation, a single-center descriptive analysis.
Dusan Harmacek, Lukas Weidmann, Kai Castrezana Lopez, Nicolas Schmid, Raphael Korach, Birgit Helmchen

Am J Transplant· September 2024

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Incidence of Common Glomerular Diseases Other Than Collapsing Glomerulopathy is Not Increased After SARS-CoV-2 Infection.
Matthias Diebold, Annette Enzler-Tschudy, Birgit M Helmchen, Helmut Hopfer, Min Jeong Kim

Kidney Int Rep· April 2024

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Too Much of a Good Thing: Severe Hypercalcemia Presenting with Lethargy and Kidney Failure.
Patrick Hofmann, Arcangelo Friedrich Carta, Christian Trachsel, Birgit Maria Helmchen

Praxis (Bern 1994)· April 2024

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Neurologic involvement in cystinosis: Focus on brain lesions and new evidence of four-repeat (4R-) Tau immunoreactivity.
Tommaso Nicoletti, Andrea Bink, Birgit Helmchen, Nils Briel, Karl Frontzek

J Neurol Sci· January 2024

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The Molecular Diagnosis Might Be Clinically Useful in Discrepant Kidney Allograft Biopsy Findings: An Analysis of Clinical Outcomes.
Thomas Schachtner, Seraina von Moos, Sanna M Kokkonen, Birgit Helmchen, Ariana Gaspert

Transplantation· February 2023

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Incidence of new onset glomerulonephritis after SARS-CoV-2 mRNA vaccination is not increased.
Matthias Diebold, Eleonore Locher, Philipp Boide, Annette Enzler-Tschudy, Anna Faivre, Birgit Helmchen

Kidney Int· December 2022

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Is Regular Radiographic Upper Urinary Tract Imaging for Surveillance of Non-Muscle Invasive Bladder Cancer Justified?
Uwe Bieri, Benedikt Kranzbühler, Burkhardt Seifert, Birgit Maria Helmchen, Alexander Gu

Cancers (Basel)· November 2022

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Eosinophilic solid and cystic renal cell carcinoma and renal cell carcinomas with TFEB alterations: a comparative study.
João Lobo, Markus Rechsteiner, Birgit M Helmchen, Niels J Rupp, Achim Weber

Histopathology· July 2022

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Clinical spectrum of gross haematuria following SARS-CoV-2 vaccination with mRNA vaccines.
Alexander Ritter, Birgit Helmchen, Ariana Gaspert, Joerg Bleisch, Barbara Fritschi

Clin Kidney J· May 2022

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Successful Induction of Specific Immunological Tolerance by Combined Kidney and Hematopoietic Stem Cell Transplantation in HLA-Identical Siblings.
Thomas Fehr, Kerstin Hübel, Olivier de Rougemont, Irene Abela, Ariana Gaspert, Birgit Helmchen

Front Immunol· February 2022

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The Morphological Spectrum of Papillary Renal Cell Carcinoma and Prevalence of Provisional/Emerging Renal Tumor Entities with Papillary Growth.
João Lobo, Riuko Ohashi, Birgit M Helmchen, Niels J Rupp, Jan H Rüschoff

Biomedicines· October 2021

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Granulomatous lung disease and immune reconstitution inflammatory syndrome in Whipple's disease.
Patrick Hofmann, Nina Durisch, Claudia Buetikofer, Birgit Maria Helmchen

BMJ Case Rep· June 2021

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Novel morphological and genetic features of fumarate hydratase deficient renal cell carcinoma in HLRCC syndrome patients with a tailored therapeutic approach.
Nicolas Wyvekens, Nadejda Valtcheva, Axel Mischo, Birgit Helmchen, Thomas Hermanns

Genes Chromosomes Cancer· November 2020

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Inter-observer reproducibility of classical lobular neoplasia (B3 lesions) in preoperative breast biopsies: a study of the Swiss Working Group of breast and gynecopathologists.
Linda Moskovszky, Barbara Berger, Achim Fleischmann, Thomas Friedrich, Birgit Helmchen

J Cancer Res Clin Oncol· June 2020

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18F-Choline-PET in parathyroid carcinoma.
Grégoire B Morand, Birgit M Helmchen, Hans C Steinert, Christoph Schmid, Martina A Broglie

Oral Oncol· November 2018

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Spiradenocarcinoma: A Comprehensive Data Review.
Roxane D Staiger, Birgit Helmchen, Claudia Papet, Diana Mattiello, Urs Zingg

Am J Dermatopathol· October 2017

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Alveolar echinococcosis of the right adrenal gland: a case report and review of the literature.
Silke Spahn, Birgit Helmchen, Urs Zingg

J Med Case Rep· November 2016

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An unusual case of mediastinal mass and bilateral nodules.
Charlotte Lilli Elena Wichmann, Birgit Helmchen, Achim Weber, Stefan Wildi, Giovanni Luca Carboni

Asian Cardiovasc Thorac Ann· June 2014

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