Publications by authors named "Felix L Herr"

Background/aim: Neutropenic enterocolitis (NE), also known as typhlitis, is a life-threatening gastrointestinal complication primarily affecting immunocompromised patients undergoing intensive chemotherapy. Its management becomes particularly challenging when compounded by comorbidities such as Behçet's disease with gastrointestinal involvement.

Case Report: We report the case of a 44-year-old male with acute myeloid leukemia (AML) and intestinal Behçet's disease who developed severe NE during induction chemotherapy.

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Background: Peptide receptor radionuclide therapy (PRRT) with [177Lu]Lu-DOTA-TATE is an established treatment for advanced gastroenteropancreatic neuroendocrine tumors (GEP-NETs). While overall renal safety is high, the kidneys remain an organ at risk. This study aimed to determine whether clinical parameters can predict the risk of PRRT-associated renal function decline.

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Background: Immune checkpoint inhibitors (ICIs) have emerged as a highly effective treatment option for patients with metastatic melanoma. As not all patients respond to ICI immunotherapy, imaging biomarkers are required to accurately monitor early response to therapy. Therefore, the aim of this study was to evaluate contrast-enhanced ultrasound (CEUS) with VEGFR2-targeted microbubbles for monitoring the effects of combined anti-PD-L1/anti-CTLA-4 immunotherapy in a murine melanoma model.

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Integrated biomarkers that predict survival in patients with gastroenteropancreatic neuroendocrine tumors (GEP-NET) receiving peptide receptor radionuclide therapy (PRRT) are still limited. This study aims to identify predictors of progression-free survival (PFS) in patients with GEP-NET undergoing two cycles of PRRT. This single-center retrospective study included 178 patients with GEP-NET (G1 and G2) who received at least two consecutive cycles of PRRT with [177Lu]Lu-DOTA-TATE and underwent somatostatin receptor (SSTR)-PET/CT before and after therapy.

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Background: We assessed immunotherapy response in a murine melanoma model using multiparametric magnetic resonance imaging (mpMRI) features with ex vivo immunohistochemical validation.

Methods: Murine melanoma cells (B16-F10) were inoculated into the subcutaneous flank of n = 28 C57BL/6 mice (n = 14 therapy; n = 14 control). Baseline mpMRI was acquired on day 7 at 3 T.

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Despite well-documented limitations, current guidelines recommend the use of size-based RECIST 1.1 for response assessment of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) under radiopharmaceutical therapy (RPT). We hypothesize that functional criteria are superior to RECIST 1.

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Objectives: In this multi-center study, we proposed a structured reporting (SR) framework for non-small cell lung cancer (NSCLC) and developed a software-assisted tool to automatically translate image-based findings and annotations into TNM classifications. The aim of this study was to validate the software-assisted SR tool for NSCLC, assess its potential clinical impact in a proof-of-concept study, and evaluate current reporting standards in participating institutions.

Methods: A framework for SR and staging of NSCLC was developed in a multi-center collaboration.

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