Publications by authors named "Petros Alexidis"

Radiation therapy (RT) treatment for head and neck cancer has been associated with dysphagia manifestation leading to worse outcomes and decrease in life quality. In this study, we investigated factors leading to dysphagia and treatment prolongation in patients with primaries arising from oral cavity or oropharynx that were submitted to radiation therapy concurrently with chemotherapy. The records of patients with oral cavity or oropharyngeal cancer that received RT treatment to the primary and bilateral neck lymph nodes concurrently with chemotherapy were retrospectively reviewed.

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Background: Significant changes in the accessibility and viability of health services have been observed during the COVID-19 period, particularly in vulnerable groups such as cancer patients. In this study, we described the impact of radical practice and perceived changes on cancer patients’ mental well-being and investigated potential outcome descriptors. Methods: Generalized anxiety disorder assessment (GAD-7), patient health (PHQ-9), and World Health Organization-five well-being index (WHO-5) questionnaires were used to assess anxiety, depression, and mental well-being.

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There are still diagnostic issues with lung cancer and mediastinum lymphadenopathy. Endobronchial ultrasound (EBUS) is a state of the art equipment for the diagnosis of lymphadenopathy and central lesions. To investigate the sample size with one pass.

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Article Synopsis
  • The study examines factors that lead to dysphagia (difficulty swallowing) and the need for percutaneous gastrostomy (PEG) in head and neck cancer patients undergoing radiation therapy.
  • Key predictive factors for severe dysphagia included higher radiation doses to the pharyngeal constrictor muscles, concurrent chemotherapy, and the presence of upper aerodigestive tract cancers.
  • Patients identified as higher risk may benefit from close monitoring during treatment and potential prophylactic PEG placement, especially those receiving definitive therapies for certain cancer types.
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Background: Primary and secondary gallbladder melanomas are rare, and only 58 cases have been reported in scientific literature to date. This paper aimed to explore the role of minimally invasive surgery in the management of gallbladder metastatic melanomas.

Case: Herein, we present the case of a 68-year-old man with metastatic gallbladder melanoma who was treated with laparoscopic cholecystectomy.

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Purpose: In this study we evaluated the day to day prostate displacement during radiation therapy by using implanted radiopaque fiducials and daily image guided position verification.

Methods: The data of 10 patients that received radiation therapy to the prostate were analyzed. Three fiducial markers were implanted in the prostate before treatment initiation for everyday verification of the target's position.

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Introduction: Copeptin is known to be associated with heart damage, while melatonin is a regulatory hormone related to circadian rhythm and represents the levels of inflammation in the body.

Methods And Patients: The aim of the study was to measure in different surgeries the levels of copeptin and melatonin at different times before and after surgery in 56 patients aged from 5 days to 13.6 years.

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Prostate cancer is considered to be highly sensitive to changes in radiation therapy dose per fraction, specifically to hypofractionation. An increase in the fractionation dose could cause a higher increase to the prostate than to the normal tissues leading to better disease control with less toxicity. Here we present the results of a randomized trial comparing mild hypofractionation to conventional fractionation after a median of 3,6 years follow up.

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Prostate cancer is considered to have a special biology which could affect the radiation therapy result based on the selected fractionation scheme. We present the preliminary results of a randomized trial comparing conventionally and hypofractionated radiation therapy for prostate cancer. Patients included in the study had localized prostate cancer (cT1c-T3bN0M0) and were randomly assigned to mild hypofractionated (72 Gy in 32 fractions, arm1) or conventionally fractionated (74 Gy in 37 fractions, arm2) radiation therapy treatment with Volumetric Arc Therapy technique.

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