Neuroendocrine tumour of the middle ear is a rare entity. Here we present a case of a 50 year old male who presented with a polyp in the left external auditory canal. Surgical excision followed by immunohistochemistry confirmed it to be a neuroendocrine tumour.
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http://dx.doi.org/10.1007/s12070-017-1068-7 | DOI Listing |
Curr Med Chem
January 2025
Healthy Ageing Research Centre, Neyshabur University of Medical Sciences, Neyshabur, Iran.
Neuroblastoma (NB) is a rare embryonal neuroendocrine tumor that primarily affects children aged 5 years old or younger. In advanced stages, NB requires a multifaceted treatment approach, including a combination of surgery, chemo, and radiation therapy. However, high-risk NB is still associated with poor prognosis, long-term side effects, and a high chance of relapse.
View Article and Find Full Text PDFFront Immunol
January 2025
Rudolf Virchow Center, Center for Integrative and Translational Bioimaging, Julius-Maximilians-Universität of Würzburg, Würzburg, Germany.
Background: The immunopeptidome is constantly monitored by T cells to detect foreign or aberrant HLA peptides. It is highly dynamic and reflects the current cellular state, enabling the immune system to recognize abnormal cellular conditions, such as those present in cancer cells. To precisely determine how changes in cellular processes, such as those induced by drug treatment, affect the immunopeptidome, quantitative immunopeptidomics approaches are essential.
View Article and Find Full Text PDFFront Immunol
January 2025
Division of Child Healthcare, Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Background: The Aryl Hydrocarbon Receptor (AhR) pathway significantly influences immune cell regulation, impacting the effectiveness of immunotherapy and patient outcomes in melanoma. However, the specific downstream targets and mechanisms by which AhR influences melanoma remain insufficiently understood.
Methods: Melanoma samples from The Cancer Genome Atlas (TCGA) and normal skin tissues from the Genotype-Tissue Expression (GTEx) database were analyzed to identify differentially expressed genes, which were intersected with a curated list of AhR-related pathway genes.
Heliyon
January 2025
Laboratory of General, Molecular and Population Genetics, Endocrinology Research Center, Moscow, 117292, Russia.
The molecular mechanisms underlying adrenal and thyroid neuroendocrine tumors, including their tumorigenesis, progression, and metastasis, involve unique pathways regulating cell cycle progression. To better understand these mechanisms and pathways, extensive in-depth research on cell cycle-related genes is necessary. This review aims to describe and interpret current single-cell RNA sequencing studies on neuroblastoma, medullary thyroid cancer, and pheochromocytoma tumors.
View Article and Find Full Text PDFOncologist
January 2025
Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, United States.
Objectives: Well-differentiated neuroendocrine tumors (NET) are highly vascular tumors characterized by their expression of vascular endothelial growth factor (VEGF). This trial investigated the activity of ramucirumab, a monoclonal antibody that targets VEGF receptor-2 (VEGFR-2) and inhibits activity of VEGF, in combination with somatostatin analog therapy in patients (pts) with advanced extra-pancreatic NET.
Methods: We conducted a single-arm phase II trial enrolling pts with advanced, progressive extra-pancreatic NET.
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