Clinical Oncology

[Cancer treatment induced gastrointestinal complications]

AL-FARHAT Yousuf, AUTH Péter

FEBRUARY 10, 2017

Clinical Oncology - 2017;4(01)

[Systemic therapy (ST) (including chemotherapy, targeted therapy, and immunotherapy) or radiation therapy (RT) can induce gastrointestinal side effects, which frequently affect patient’s quality of life. Sometimes side effects could be dose-limiting, or a reason to stop the treatment. The incidence and severity of gastrointestinal complications in patient’s receiving ST, RT, or chemoradiotherapy are affected by numerous factors, including: therapeutic agents, doses and route of administration, target of the RT (upper, lower abdomen or body) and individual patient variability (age, sex, prior cancer therapy, comorbidities, performance status). Mucositis occurs in approximately 20% to 40% of patients receiving conventional chemotherapy, 80% of patients receiving high-dose chemotherapy, nearly all patients receiving head and neck radiation therapy. mTOR inhibitor-associated stomatitis (mIAS) is the most frequent dose-limiting toxicity (52.5%). More than 90% of patients receiving highly emetogenic chemotherapy will have episodes of vomiting. However, only about 30% of these patients will vomit if they receive prophylactic antiemetic regimens.]



Further articles in this publication

Clinical Oncology

[The role of PET in clinical oncology]


[Positron emission tomography (PET) has earned an important role in clinical imaging, where it is used almost exclusively as hybrid modality such as PET/CT and PET/MR. The driving force behind the development of the method and the increasing clinical penetration of PET in the past two decades was clearly its use in Oncology. The most used tracer in PET is the 18 F-labeled fl uoro-deoxy-glucose (FDG). With the help of this molecule malignant tumors and their metastases, in which anaerobic glycolysis is typically increased, can be identifi ed with high sensitivity in the total body volume. However, FDG is not a tumor specifi c tracer, thus both false positivity and false negativity may occure which reduces the diagnostic accuracy. Indications of FDG PET studies in Oncology continuously evolved, owing to scientifi c publications, large scale national programs and even health-economic considerations. This publication describes the well-established indications of FDG PET/CT(MR) tests in cancer diagnostics and furthermore discusses more recent new PET tracers already being applied as well as those expected to be used in the future.]

Clinical Oncology


A szerkesztők

Clinical Oncology

[Treatment of neuroendocrine tumors]


[Recently, the therapeutic possibilities for the locally invasive or metastatic neuroendocrine tumors developed signifi cantly, although we have no widely accepted predictive or prognostic factors, which could help to design the most effective sequential therapy. To make therapeutic strategy the internationally accepted clinical guidelines should be considered. The therapeutic activity has to be performed in oncological centers with the support of a multidisciplinary team.]

Clinical Oncology

[Diffuse large B-cell lymphoma – a road to personal therapy]


[The majority of patients with diffuse large B-cell lymphoma can be cured using the standard rituximab, cyclophosphamide, doxorubicin, vincristine and prednisolone (R-CHOP) based therapy. However, approximately 30-40% of the patients are refractory to the therapy or they relapse. The currently available salvage therapies represent a realistic curative approach only for approximately one quarter of the patients. Therefore, there is unmet clinical need for more effi cient fi rst line and salvage therapies in DLBCL. The rapid advances in the fi eld of molecular genetic techniques lead to a better understanding of the biological heterogeneity as well as the discovery of the key factors involved in the pathogenesis of the disease. Nowadays, the distinction between the cases with germinal center B-cell and activated B-cell origin characterized with different prognosis has therapeutic implications. Presently, the therapy of the so-called double-hit lymphomas also represents an unmet clinical need. The next generation sequencing based studies lead to the discovery of novel molecular targets, including components of different cellular signaling pathways, immune checkpoints and components of the microenvironment. Targeted therapies against many of these molecular targets are being tested in different clinical trials. Due the heterogeneity of the disease, it is of critical importance to identify those patient groups who will benefi t from a particular targeted therapy. Hopefully, this risk-adopted therapeutic approach will become soon available for patients with DLBCL. Currently, the R-CHOP therapy still represents the gold standard in treatment of patients with DLBCL.]

Clinical Oncology

[Cell cycle as therapeutic target – CDK4/6 inhibition]


[One of the most important decision of a cell: to live or die. If survival is the choice, there are three options: proliferate, to stay in sleeping state for a while, or differentiate in order to perform its specifi c function. These decisions are under a very strict molecular regulation infl uenced by internal and external factors. Tumor cells more and more disregard the regulations, and move into independency for a continuous proliferation, which has a very similar program in normal and tumor cells. The main route towards mitosis is the cell cycle, under the supervision of positive and negative regulators, forming checkpoints, telling to the cell - under the infl uence of mitogenic signals - to go or to stop. The most critical checkpoint is at the border of G1 and S phases where the main players are cyclinD, CDK4/6 and RB1. It turned out that the best targets to inhibit cell proliferation are the CDKs, but this approach, when used unselected targets, was unsuccessful due to the toxicity. To improve the clinical results, the selection of CDK4/6 as a therapeutic target seems to fulfi l most of the hopes. Today three drugs are the most promising: palbociclib (with an acceptance by FDA and EMA to treat breast cancer patients), abemaciclib and ribociclib (underclinical trials). Now, most of the data concern breast cancer, especially the combinations of CDK4/6 inhibitors and endocrine therapy, but many other malignancies are studied (e.g. liposarcoma, mantel cell lymphoma, melanoma, renal cancer, lung cancer, pancreatic cancer, ovarian cancer, teratomas etc.). The key points are the side-effects, the most frequently observed is neutropenia, but so far it is managed without serious toxicity.]

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Clinical Oncology

[Non surgical treatment of urinary bladder cancer]

PIKÓ Béla, LACZÓ Ibolya

[According to our present knowledge the surgical intervention in the treatment of bladder cancer is essential, but some non-surgical treatment methods play an indispensable role as well. Super- fi cial (non-muscle-invasive) form of bladder cancer can be treated by intravesical chemotherapy or BCG instillation, radiotherapy; the muscle-invasive forms of this tumour (≥pT2a) need neoadjuvant, adjuvant chemotherapy, radiotherapy or radio-chemotherapy. In case of metastatic disease (or locally advanced, recurrent disease) the treatment regimen consist of chemotherapy (given as fi rst line or second line), palliative radiotherapy, interventional methods, radio-isotope therapy and symptoms relief drugs. We present each of the therapeutic modalities and their indications category based on the ESMO and NCCN guidelines.]

Clinical Oncology

[First-line treatment of epithelial ovarian cancer]


[The restructuration of Hungarian oncological attendance and medicinal fi nancing resulted in the more intensive participation of clinical oncologists in the therapy of patients with ovarian cancer. The aim of the authors was not to defi ne the taxative therapeutic recommendations, but to give an overview on the development of the therapy and to introduce the deliberation aspects and therapeutic alternatives. While the primary and secondary prevention have developed in case of cervical cancer - with the possibility of eradication - the improvement of surgical techniques and clinical oncological treatments may result in the decrease of mortality in ovarian cancer. It is important to emphasis that only the appropriately aligned application of the two therapeutic modalities can lead to the desired outcome. It has become clear by the end of the ‘90s, that paclitaxel-carboplatin combination is the standard chemotherapy against ovarian cancer. Alternative cytostatic treatments like intraperitoneal treatment and triplets were not breakthroughs. The dose intensive treatment increased the survival rates besides good tolerability, however the results require further confi rmation. Neoadjuvant therapy should be considered in case of patients with advanced and metastatic disease in selected cases. Recently, therapeutic use of angiogenesis inhibition comes with signifi cant improvement. Bevacizumab is the fi rst of targeted therapies, and studies on the effectiveness of similar compounds are under way.]

Lege Artis Medicinae



[It was during the last 15 years when justified by clinical studies the sensitivity/resistance to anticancer chemotherapy was included in the setting of the prognostic factors of the ovarian cancer, while demonstrating a stronger correlation with the outcome than those factors known before. Remission and duration of remission after first-line chemotherapy are the two important components of sensitivity and their combinations measure its grade in a semi-quantitative manner. The chemotherapy sensitivity/resistance approach is based on the observations on ovarian cancer patients treated with platinum based chemotherapy. This agent in repeated adminstrations during the whole course of the disease is still a decisive component of the ovarian cancer chemotherapy. As a consequence there is always “a platinum-free interval”. The prolongation of this platinum-free interval with non-platinum chemotherapy has the potencial of increasing the remission and survival by platinum reinduction administered in the third-line of chemotherapy. In spite of the facts mentioned above, there are centers which prefer the early re-administration of taxan/platinum combination to the prolongation of platinum- free interval and expose their patients to an elevated risk of cumulative, in the first-line non-haematological toxicity.The neurotoxicity can deteriorate the quality of life and the parenchymal laesion of kidneys can prevent further chemotherpy.]

Lege Artis Medicinae



[INTRODUCTION - Anaemia is a common complication among patients with malignant tumours, and is due to the disease itself or to the oncologic treatment. Anaemia worsens the patient’s quality of life and hampers anti-cancer treatment in the appropriate intervals and doses. Erythropoiesis stimulating protein therapy in the anaemia of oncologic patients raises the haemoglobin level, reduces the need for red blood cell transfusion and improves quality of life. This drug has recently become accessible in Hungary for the treatment of chemotherapy-induced anaemia in patients with small cell lung cancer. CASE REPORT - In this paper the case of a 64- year-old woman with small cell lung cancer who survived for more than 2 years is presented. Two-line chemotherapy was administered together with irradiation and darbepoetin alpha supportation. The successful treatment of anaemia with darbepoetin alpha permitted the administration of chemotherapy in the necessary intervals and doses. CONCLUSIONS - The adequate use of erythropoiesis stimulating protein facilitates the management of patients with small cell lung cancer, and improves their quality of life.]

Clinical Oncology

[Metals and cancer]

VETLÉNYI Enikő, RÁCZ Gergely

[We often tend to forget about our environment when looking for the origin of a disease. Inhaled air, drinking water and food, substances in contact with the skin all have an effect on the human body. Metals are indispensable parts of our everyday lives, their mining, processing and use cause a continuous exposure to them. Metal exert their effects on the body in various ways. Many of them are essential for maintaining homeostasis, but excessive or harmful metal intake can lead to health damage, including tumour formation through multiple attack points. Metals substitute each other during different transport processes and in the structure of proteins, they cause oxidative stress and bind to DNA, thereby damaging it. Applying them appropriately, the proapoptotic effect of the metal compounds is brought to the fore, thus becoming a therapeutic tool for tumours. Nowadays, platinum(II) compounds are widely used as chemotherapeutic agents and there are many ongoing studies to fi nd metal compounds with an ideal therapeutic and side-effect profi le. The aims of this article were to draw the attention to the dangers of metals in relation to cancer and to highlight their diverse application possibilities in current and future cancer therapy and diagnostics.]