weeks to years. The literature on recurrent ITP (rITP) is limited. OBJECTIVE: The aim of this study was to retrospec- tively review patients with rITP who were followed up during the period of 1975–2004. METHODS: We reviewed the outcome of 790 children with rITP RESULTS: Among 790 children with ITP, 47 (5.2%) presented with 1 episode of thrombocytopenia. The median age of the children at onset of the disease was 55.9  35.3 months and at final remission was 94.4  58.9 months. The majority of patients (76.6%) had 1 recurrence, whereas the rest of them had 1 recurrence (up to 4); the total number of recurrences was 63. The interval between 2 episodes was 6 months in 25% of the episodes, 6 to 12 months in 29%, 12 to 24 months in 24%, 24 to 36 months in 8%, and 3 years in 14%. Almost half the patients demonstrated bleeding mani- festations at diagnosis, whereas only a minority (5) showed bleeding symptoms during the first recurrence. Hemorrhages occurred at times of severe thrombo- cytopenia and were, in general, mild; however, 1 patient suffered intracranial hemorrhage. Of the episodes, 28.6% necessitated hospitalization and 17.5% required therapeutic intervention with corticosteroids or/and in- travenous immunoglobulin. The long-term outcome of all patients was excellent, and none of them needed splenectomy. CONCLUSIONS: rITP occurs mostly in young chil- dren, has a good outcome after 1 to 5 episodes, and a median age that ranges from months to years. The course is more often benign; however, life-threaten- ing hemorrhage may occur in a severely thrombocy- topenic patient. SEASONAL AND GENDER DIFFERENCES IN THE PREVALENCE OF INFANT ANEMIA Submitted by Songul Yalcin S. Songu ¨ l Yalcin, Raziye Dut, Kadriye Yurdakok, Elif Ozmert Institude of Child Health, Hacettepe University, Ankara, Turkey INTRODUCTION: Anemia is the most prevalent nutri- tional deficiency in the world. OBJECTIVE: To estimate the prevalence of anemia among infants receiving routine health care in the Hacettepe University Ihsan Dog ˘ ramacı Children’s Hospital Well Baby Clinic in Ankara, Turkey, we con- ducted a cross-sectional study by using data from 469 healthy infants who had data available on their he- moglobin values at 6 months of age for the last 3 years. METHODS: Infants with acute or chronic illness or thalassemia and infants who had taken or were taking iron supplementation at the time were not included in the study. Information regarding the children was ob- tained from hospital files. Infants with a hemoglobin level of 10.5 and 9.5 g/dL were considered to be mildly and moderately anemic, respectively, at 6 months of age. RESULTS: The mean level of hemoglobin was 10.7 g/dL (SD: 0.90). The prevalence of anemia was 41.4%. Boys had significantly lower hemoglobin and hematocrit levels and mean corpuscular volume than girls. Infants born before 37 weeks’ gestational age had moderate anemia more frequently. Infants born in spring or summer had anemia more fre- quently than those born in fall or winter (49.2% and 26.8%, respectively; P  .001). Birth weight and monthly weight gain from 6 to 9 months were posi- tively correlated with hemoglobin value at 6 months (r = 0.14, P = .003 and r = 0.10, P = .041, respec- tively). CONCLUSIONS: Anemic infants aged 6 months had an increased risk of developing growth failure from 6 to 9 months. In this study, the prevalence of anemia ob- served was of severe public health significance and jus- tifies the need to emphasize, in prenatal and infant health programs, intervention measures that consider season of birth for anemia control. SHOULD THE PELVIS BE INCLUDED IN ABDOMINAL COMPUTED TOMOGRAPHY SCANS OF CHILDREN WITH UPPER- ABDOMINAL PRIMARY MALIGNANT TUMORS? Submitted by Maria Zarifi Christiana Hadgigeorgi, Maria Zarifi, George Pitsoulakis, Ekaterini Tavernaraki, Triantafyllia Makri Computed Tomography and MRI Department, Agia Sophia Children’s Hospital, Athens, Greece INTRODUCTION: There is increasing awareness of the potential risk associated with ionizing radiation in pedi- atric radiology. Children with abdominal cancer undergo multiple computed tomography (CT) scans both at diag- nosis and for follow-up. OBJECTIVE: We sought to estimate the potential con- tribution of pelvis CT findings in the management of children with upper-abdominal tumors in correlation with the effective radiation dose. METHODS: Three hundred forty-two children (aged 1 day to 16 years) with histologically proven upper- abdominal primary malignant tumors (children with lymphoma were not included) were examined during the last 15 years in our department. Their upper- and lower-abdominal CT scans were reviewed retrospec- tively for clinically significant pelvic abnormalities. PEDIATRICS Volume 121, Supplement 2, January 2008 S123 by guest on September 23, 2017 http://pediatrics.aappublications.org/ Downloaded from