Daganatellenes kezelésben részesült gyermekek késői pulmonalis toxicitásának vizsgálata | Examination of late pulmonary toxicity in children treated for malignancies

Bevezetés: A terápiás besugárzás és a különböző kemoterápiás szerek károsíthatják a tüdőt. Célkitűzés: Jelen tanulmány célja a gyermekkori daganatellenes kezelésben részesültek utánkövetése, a pulmonalis toxicitás lefolyásának monitorozása volt. Betegek és módszerek: A vizsgálatban 26 személy (10 leány és 16 fiú) vett részt, átlagéletkoruk 19,4 év volt, a kezeléstől az első felmérésig eltelt átlagos idő 4,5 év, a második felmérésig eltelt átlagos idő 10 év volt. Eredmények: 14 esetben észleltek kóros légzésfunkciós eredményt az első felmérés alkalmával, ebből hét obstruktív, öt kevert, kettő pedig restriktív jellegű zavar volt. A második felmérés során a kóros esetek száma hatra csökkent, akik közül két esetben obstruktív és négy esetben restriktív jellegű eltérést tapasztaltak. A dinamikus paraméterek pozitív irányú változása minden kóros értékben nyomon követhető volt (p<0,05). A statikus paraméterek értékelése során szintén javulási tendenciát figyeltek meg, azonban ez nem mutatott szignifikáns mértéket. Következtetés: Restriktív jellegű légzészavar a kezeltek kis részében mutatható ki. A kezelés következtében fellépő pulmonalis obstruktív elváltozások az idő előrehaladtával javuló tendenciát mutatnak. Orv. Hetil., 2013, 154, 345–350. | Introduction: The present investigation was based on a survey in 2005, in which the authors found pulmonary function abnormalities in survivors of childhood cancer, who were treated with anticancer therapy. Aim: The purpose of the present study was to follow-up childhood cancer survivors and detect late pulmonary toxicity. Patients and methods: Lung function test was performed with spirometry in 26 survivors participated in this study (10 females and 16 males; mean age, 19.4 years at the time of the second follow-up evaluation). The average time periods from treatment until the first and second follow-up evaluation were 4.5 and 10 years, respectively. Results: The authors found 14 patients with pathological pulmonary function tests results at the time of the first follow-up evaluation, from which 7 patients had obstructive, 5 patients had mixed and 2 patients had restrictive abnormalities. However, there were only 6 patients who had abnormal pulmonary function at the time of the second follow-up evaluation (2 patients with obstructive and 4 patients with restrictive pulmonary function tests (p<0.05). Conclusion: Restrictive pulmonary disorder was detected in only small part of the treated patients. The obsructive pulmonary abnormalities caused by the treatment showed an improving tendency over time. Orv. Hetil., 2013, 154, 345–350

Hungarian experience with Langerhans Cell Histiocytosis in childhood

The Langerhans cell histiocytosis (LCH) in children is relatively rare and the long-term analysis of therapy results has not been done yet in Hungary. The aim of this study was to investigate the incidence, clinical features, prognostic risk factors, and treatment results of children's LCH in Hungary in a 20-year period. Children less than 18 years of age with newly diagnosed LCH in Hungary were entered in this study. Clinical data of all children with LCH were reported to the National Childhood Cancer Registry in Hungary from 1981 to 2000. The clinical files were collected and abstracted for information regarding age at diagnosis, gender, disease characteristics, treatment, and outcome of treatment. Median follow-up duration of surviving patients is 10.98 years. Between January 1981 and December 2000, 111 children under 18 years of age were newly diagnosed with LCH in Hungary. The annual incidence of LCH in children younger than 18 years of age was 2.24/million children. The male–female ratio was 1.36:1; the mean age was 4 years 11 months. Thirty-eight children had localized disease and in 73 cases systemic dissemination was found already at the time of diagnosis. Twenty-two patients were treated only by local surgery, 7 by surgery with local irradiation, and 5 children got only local irradiation. In 2 cases remission was achieved with local steroid administration. Seventy-five patients received chemotherapy. In the 20 years of the study 14 children died, 9 due to the progression of the disease. Sixteen patients had relapse with a mean of 2.16 ± 1.29 years after the first diagnosis. Three patients with relapse got chemotherapy generally used in lymphoma and remission was achieved. The overall survival of all patients (n = 111) was 88.3 ± 3.1% at 5 years and 87.3 ± 3.2% at 10 and 20 years. Childhood LCH is a well-treatable disease and the survival rate is high. Even disseminated diseases have a quite good prognosis in childhood

Value of FDG-PET/CT Examinations in Different Cancers of Children, Focusing on Lymphomas

The aim of the study was to assess sensitivity and specificity of FDG-PET/CT in different forms of childhood cancer. We retrospectively evaluated the results dedicated of 162 FDG-PET/CT examinations of 86 children treated with: Hodgkin lymphoma (HL; n = 31), non-Hodgkin lymphoma (NHL; n = 30) and other high grade solid tumors (n = 25). Patients were admitted and treated in two departments of pediatric hematology and oncology in Hungary. FDG-PET/CT was performed for staging (n = 25) and for posttreatment evaluation (n = 137). Imaging was performed in three FDG-PET/CT Laboratories, using dedicated PET/CT scanners. False positive results were defined as resolution or absence of disease progression over at least 1 year on FDG-PET/CT scans without any intervention. In some cases histopathological evaluation of suspicious lesions was performed. Fals negative results were defined as negative FDG-PET/CT results in case of active malignancy. Positive predictive values (PPV) and negative predictive values (NPV) were calculated. NPV was 100 %. The highest PPV was observed in high grade solid tumors (81 %), followed by HL (65 %) and NHL (61 %). There was a major difference of PPV in different histological types of HL (50 % in HL of mixed-cellularity subtype, 90 % in nodular sclerosing, and 100 % in lymphocyte-rich and lymphocyte depleted HL). We treated one patient with nodular lymphocyte predominant HL, who had 5 false positive FDG-PET/CT results. PPV of T- and B-lineage NHL were similar (60 % and 62 %, respectively). We observed an interesting difference of PPV in different stages of HL and NHL. In HL PPV was higher in early than in advanced disease forms: 66 % in stage II HL and 60 % in stage III HL, whereas there was an inverse relationship between PPV and disease stages in NHL 0 % in stage I and II patients, 67 % in stage III and 100 % in stage IV patients. PPV was lower in males (54 %) than in females (65 %). PPV were 64 % vs. 58 % in patients under vs. over 10 years of age. Negative FDG-PET/CT results during follow-up reliably predict the absence of malignancy. Positive FDG-PET/CT scan results in general have a low PPV. The relatively high PPV in patients with histologically proven high grade solid tumors, advanced stages of NHL and with nodular sclerosing, lymphocyte-rich and lymphocyte depleted subtypes of HL warrant a confirmation by biopsy, whereas the watch-and-wait approach can be used in other forms of childhood cancer patients with a positive FDG-PET/CT result in course of follow-up examinations