Endocrine complications associated with hematopoietic stem cell transplantation and its evaluation in children / 国际儿科学杂志

Hematopoietic stem cell transplantation, applied in the treatment of blood tumors and non-tumor diseases in children, has improved the survival rate and life span of the patients.However, with the extension of survival time, various endocrine complications will appear in these survivors of childhood cancer and reduce the quality of life.Complications related to hematopoietic stem cell transplantation in children are caused by primary disease and/ or treatments before and after transplantation, including abnormal glucose and lipid metabolism, hypogonadism, short stature and so on.Regular endocrine evaluations can help physicians find the endocrine dysfunctions of children with hematopoietic stem cell transplantation as soon as possible.This review summarizes the common endocrine complications and follow-up evaluation of children with thalassemia and acute leukemia after hematopoietic stem cell transplantation, in order to provide reference for the monitoring of endocrine function in children after hematopoietic stem cell transplantation.

Prevalence of endocrine complications in transfusion dependent thalassemia in Hospital Pulau Pinang: A pilot study

@#Introduction: Frequent blood transfusions results in iron overload and lead to multiple endocrine complications. In spite of improvements in iron chelation therapy, a significant number of transfusion dependent thalassaemia (TDT) patients still develop endocrine complications. The aim of this study is to evaluate the prevalence of various endocrine complications in our adult TDT patients and to study the correlation with serum ferritin and liver iron concentration (LIC). Methods: A retrospective review of all TDT patients treated in Haematology Unit, Hospital Pulau Pinang (HPP) was conducted. Results: Of the 45 adult TDT patients, 22 were males and 23 were females with mean age of 28.8±6.9 years old. Majority of TDT in HPP were beta thalassemia major (71.1%), followed by E-Beta thalassemia (24.4%) and HbH-Constant Spring (4.4%). Frequency of transfusion was 3-4 weekly. 40.0% of adult TDT suffered from at least one endocrine complication. Among the adult TDT patients with endocrine complication, 50% have one endocrinopathy, 38.9% with two types of endocrinopathies and 11.1% of them have three or more types of endocrinopathies. Hypogonadism (22.2%) was the commonest endocrine complication, followed by osteoporosis (20%), hypothyroidism (13.3%), diabetes mellitus (6.7%) and hypocortisolism (4.4%). Patients with endocrine complications were significantly older. Mean serum ferritin level and LIC was higher among patients with endocrine complications but both were not statistically significant. Conclusion: Endocrinopathy is still prevalent in 40% of adult TDT patients. This leads to higher health-care resource utilization, cost and significant morbidities among patients with TDT. Therefore, regular monitoring and early detection with intensification of chelation therapy is essential.

Endocrine Complications after Hematopoietic Stem Cell Transplantation during Childhood and Adolescence

Long-term survivors of hematopoietic stem cell transplantation (HSCT) during childhood and adolescence are at risk of developing endocrine complications. The purpose of this study was to evaluate the long-term endocrine complications and their associated risk factors among such patients. We reviewed the data from 111 patients (59 males and 52 females) who underwent HSCT at the mean age of 8.3+/-4.1 yr. Thirty patients (27.0%) had growth impairment, and seven (21.2%) out of 33 patients who attained final height reached final height below 2 standard deviation (SD). The final height SD score of the patients conditioned with total body irradiation (TBI) was significantly lower than that of the patients conditioned without TBI (-1.18+/-1.14 vs. -0.19+/-0.78, P=0.011). Thirteen patients (11.7%) developed hypothyroidism (11 subclinical, 2 central) 3.8+/-1.8 (range 1.6-6.2) yr after HSCT. Nineteen (65.5%) out of 29 females had evidence of gonadal dysfunction, and 18 (64.3%) out of 28 males had evidence of gonadal dysfunction. The risk for gonadal dysfunction was significantly higher in females conditioned with busulfan/cyclophosphamide (P=0.003). These results suggest that the majority of patients treated with HSCT during childhood and adolescence have one or more endocrine complications. Therefore, multiple endocrine functions should be monitored periodically after HSCT until they reach adult age.

Late Endocrine Complications in Childhood Cancer Survivors / 대한소아혈액종양학회지

PURPOSE: This study is aimed to find out the incidence of late endocrine complications in children who were treated for childhood cancer. METHODS: We reviewed the medical records of 60 patients who was treated for childhood cancer and evaluated various pituitary hormonal functions after completion of treatment from July 1985 to September 2004 at Kyungpook National University Hospital. RESULTS: Forty-four boys (73.3%) and sixteen girls (26.7%) were involved in the study and their ages ranged from 2 months to 14 years. Twenty-four patients were treated with chemotherapy with cranial irradiation and thirty-six were treated with chemotherapy only. The diagnoses included ALL (n=27, 45.0%), AML (n=2, 3.3%), malignant lymphoma (n=13, 21.7%), brain tumor (n=5, 8.3%), MDS (n=1, 1.7%), and other solid tumor (n=12, 20.2%). Forty-four (73.3%) out of the 60 patients had an additional endocrine abnormality. Growth hormone deficiency (GHD) was identified in 44 children (73.3%). Incidence of GHD was significantly higher among those who had received cranial irradiation (91.6% vs. 61.1%) (P=0.009) but this kind of difference was not found in ALL 27 patients (93.7% vs. 72.7%) (P=0.131). Only one patient was diagnosed as primary hypothyroidism, two patients were diagnosed as primary hypogonadism, and these three patients showed growth hormone deficiency. No patient had abnormalities of ACTH and cortisol. CONCLUSION: We thought that late endocrine complications were very common in childhood cancer survivors. Accordingly, we recommended that we should focus on endocrine abnormalities while treating and following up the patients.