Klinická Onkologie : Casopis Ceské a Slovenské Onkologické Spolecnosti

BACKGROUND: Idiopathic multicentric Castleman disease (iMCD) is characterized by constitutional symptoms, enlarged lymph nodes and laboratory test abnormalities, which are primarily related to the overproduction of interleukin-6 (IL-6). This form (iMCD) was treated earlier with cytostatics used for lymphoma, later with bio-logic therapy as rituximab, immunodulatory drugs and proteasome inhibitors, and in the last years with an anti-IL-6 antibody, siltuximab. Siltuximab is a human-mouse chimeric immunoglobulin G1k monoclonal antibody against human IL-6 approved in the European Union for the treatment of iMCD...

BACKGROUND: Bladder cancer is 11th most common cancer worldwide. Histologically, most of the tumors are classified as urothelial carcinomas. Less common variants (squamous cell or adenocarcinomas) usually comprise up to 10% of cases. Other types of tumors are exceptional. The finding of Ewing's sarcoma in the bladder is considered extremely rare. CASE: We present the case of a 54-year-old female patient examined for painless hematuria. During the follow-up examination, a bulky tumor of the bladder was detected, but considering the extent of the bladder tumor, only a diagnostic transurethral resection was possible...

BACKGROUND: Medical psychology research shows that how a patient communicates appears to be the strongest predictor of physician behavior during a consultation and that patient's activity also influences how much information a physician communicates to a patient about his or her illness and treatment. Thus, being a patient is a skill that needs to be developed to balance the responsibilities of doctors and patients in each of their encounters. There is a lack of clear recommendations and education in this area, and patients' behaviour is instead governed by the etiquette of courtesy...

BACKGROUND: The evaluation of treatment outcomes and toxicity in patients with metastatic castration-resistant prostate cancer (mCRPC) treated by enzalutamide or abiraterone after previous docetaxel. PATIENTS AND METHODS: We analyzed 66 patients with mCRPC treated by enzalutamide (55 patients) or abiraterone (11 patients) after previous therapy with docetaxel. The median follow-up was 31.2 months. Enzalutamide and abiraterone were administered in daily doses of 160 mg and 1,000 mg per day, respectively...

BACKGROUND: Myeloma cells, occupying a bone marrow niche, are influenced not only by neighbouring stroma cells but also by signals from the axons of sympathetic nervous system. The nervous system is directly involved in the process of myeloma progression. Among other cancers, patients with myeloma suffer the most difficult distress generating intensive adrenergic signals, causing its further progression. There is a question arising from these facts regarding whether psychological interventions, modulating a function of the nervous system, can further improve outcomes of myeloma treatments...

BACKGROUND: Recent developments regarding the contribution of microRNAs to tumor angiogenesis and the oncogenic effects of microRNAs point to their potential role in breast cancer angiogenesis. Tumor-derived exosomes are considered a rich source of microRNAs that can regulate the function of other cells in the tumor microenvironment, including vascular endothelial cells. This study analyzes the effect of tamoxifen chemotherapy on the expression of a key microRNA, miR-329, and introduces a regulatory link between this microRNA and the KDM1A gene associated with the vascular endothelial growth factor (VEGF) messaging pathway...

BACKGROUND: Malignant lymphomas represent a highly heterogeneous group of tumors with varied clinical behavior - from indolent to very aggressive forms with survival in the order of months. From the very beginning, these diseases are considered systemic, often occurring in several anatomical locations simultaneously. However, diagnosis and exact classification are usually inferred from a bio-psy of a single pathological lymph node or infiltrate, even though clinical experience shows that the bio-logical behavior of lymphoma is not necessarily identical across anatomical locations...

BACKGROUND: The fifth edition of World Health Organization classification of urinary and male genital tumours also brought news regarding testicular tumours. In contrast to the previous editions' radical alterations, the adjustments in the fifth edition are subtle and mostly impact the terminology, categorization of some of the rare tumours and diagnostic criteria. PURPOSE: Acquainting with current terms and tumor classification, which is necessary for good clinical practice...

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Commentary on the newly released European Society for Medical Oncology (ESMO) guidelines for the diagnosis and treatment of metastatic colorectal cancer (mCRC). After 6 years, individual chapters have been updated, from molecular tumor testing to diagnostic and treatment procedures to the implementation of newly registered medicinal products. The authors highlight the most important changes in the guidelines. Awareness of possible new treatments for mCRC is important to determine the treatment strategy for patients with mCRC...

BACKGROUND: Postoperative oral cancers with close margins belong to medium- to high-risk category for local failure. During re-surgery for close margins, there is sufficient doubt as to whether the re-excised tissue is from the same region as the close margin. Therefore, we planned a retrospective review of these cases of close margins that were re-excised with extra-resection margins (ERMs). MATERIAL AND METHODS: Details of 2011 oral cavity patients resected at our hospital were retrieved...

BACKGROUND: Breast cancer is recognized as a major clinical challenge in gynecological diseases worldwide. Exosomes are small vesicles derived from multicellular bodies that are secreted by many cells into the extracellular environment and thus participate in intercellular communication through the transfer of genetic information such as encoded and non-encoded RNAs to target cells. Tumor-derived exosomes are thought to be a rich source of microRNAs (miRNAs) that can regulate the function of other cancer cells in the tumor microenvironment...

PURPOSE: The aim of this study is to investigate the effects of sociodemographic and clinical data on depression and anxiety levels in patients who undergoing radiotherapy for breast cancer. MATERIALS AND METHODS: A total of 111 patients with breast cancer treated in the Radiation Oncology Department of Kayseri City Education and Research Hospital were included in this study. The study was planned prospectively as a survey research based study. Ethics committee approval was obtained...

BACKGROUND: Recent developments regarding the contribution of microRNAs (miRNAs) to tumor angiogenesis and the oncogenic effects of miRNAs point to their potential role in breast cancer angiogenesis. Tumor-derived exosomes are considered a rich source of miRNAs that can regulate the function of other cells in the tumor microenvironment, including vascular endothelial cells. This study analyzes the effect of tamoxifen chemotherapy on the expression of a key miRNA, miR-573, involved in the angiogenesis of the tumor exosomes and introduces a regulatory link between this miRNA and the CD146 gene associated with the vascular endothelial growth factor (VEGF) messaging pathway...

BACKGROUND: The endoplasmic reticulum (ER), an organelle composed of a system of cisternae and tubules, is essential for many cellular processes, including protein synthesis and transport. When misfolded proteins accumulate in the ER lumen, ER stress is induced, and the subsequent response to the disruption of homeostasis is the activation of the unfolded protein response (UPR). The purpose of this process is to restore homeostasis by increasing the capacity of the ER and its ability to fold proteins...

BACKGROUND: Hereditary cancer syndromes are an important subset of malignant cancers caused by pathogenic variants in one of many known cancer predisposition genes. Diagnosis of cancer predisposition is based on genetic testing using next-generation sequencing. This allows many genes to be analysed at once, increasing the number of variants identified. The correct classification of the variants found is essential for the clinical interpretation of genetic test results. PURPOSE: The aim of this study is to summarise the rules for classifying identified variants within individual laboratories and to present the process for creating a common classification...

BACKGROUND: Metastasis to the gallbladder is very rare. This case report highlights a rare cause of acute cholecystitis, which should be considered by the surgeon and other treating physicians in the differential diagnosis of patients with urothelial carcinoma. CASE: We report the case of a 73 year-old man with follow-up oncology care. He was diagnosed with infiltrating urothelial carcinoma in 2019, received neoadjuvant chemotherapy, and subsequently underwent radical cystectomy with ureteroileostomy in April 2020...

BACKGROUND: Alveolar soft part sarcoma (ASPS) is a very rare mesenchymal malignancy of uncertain origin. It mostly affects young people, with about a quarter of cases being diagnosed in children. CASE: An 11-year-old girl had a painless subcutaneous "lump" in the left elbow area. Imaging exams revealed a solid soft-tissue intramuscular mass of suspicious appearance. A surgical excision of lesion was performed. The biopsy consisted of a lobular tumor measuring 35 × 20 × 12 mm...

BACKGROUND: Pediatric-inspired protocols with prospective monitoring of minimal residual disease (MRD) are considered the standard of intensive treatment for adults with acute lymphoblastic leukemia (ALL). They have been used in the Czech Republic since 2007. PATIENTS AND METHODS: Two hundred and ninety-seven patients aged 18-65 years were treated at five hematology centers between 2007-2020 according to the GMALL 07/2003 protocol. This is a retrospective analysis of their treatment outcomes...

BACKGROUND: Oral squamous cell carcinoma (OSCC) is the most common cancer of the head and neck region. The circular RNA (circRNA) is known to serve an important role in the carcinogenesis of different types of cancer. However, the circRNA role of OSCC remains unclear. MATERIAL AND METHODS: OSCC tissues and adjacent normal tissues were obtained to detect circRNAs expression by the next generation sequencing (NGS), and OSCC tissues were selected to verify the differentially significant circRNAs by reverse transcription-quantitative polymerase chain reaction (RT-qPCR)...