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We report two cases of a choledochal cyst associated with dilatation of the cystic duct. This unusual variant of choledochal cyst was explored by ultrasonography and MR cholangiopancreatography. [Copyright &y& Elsevier]

Purpose: To compare image quality and radiation exposure from pediatric thoracic spine radiographs from two systems, one using a granular structure scintillator and another using a needle structure scintillator with 40% reduction of exposure., Patients and Methods: Randomized prospective study of 296 patients divided into 2 groups of 5 weight categories from 4 to 60 kg. Standard technique parameters are used for granular structure scintillators with dose reduction of 40% applied for needle structure scintillators based on results from a phantom study. Image quality based on detectability of 8 anatomical structures for both types of scintillators was assessed by 6 blinded radiologists. Exposure was expressed by DLP. Results underwent statistical analysis., Results: Overall, image quality was superior with corresponding dose reduction between 33-46% according to weight with needle structure scintillators. For the 4 lower weight categories, image quality was identical., Conclusion: With image quality at least equal, new needle structure scintillator units allow a dose reduction of about 40%.

Management of cystic lymphangioma necessitate for optimal diagnosis and treatment the expertise of a trained multidisciplinary team including dermatologists, radiologists, plastic and vascular surgeons. An initial imaging work-up of these lesions by ultrasound Doppler examination and MR imaging are necessary before treatment planning. Depending of the size, the location, the risk for the adjacent organs, a therapeutic decision may be mandatory. Percutaneous sclerotherapy is a safe and efficient treatment. It is the treatment of choice that must be proposed in first intention.

Lipoblastoma is an uncommon benign soft tissue tumor arising from embryonal mesenchymal cells. It occurs mostly during early childhood with a predilection for the extremities, trunk, head and neck. This tumor tends to spread locally and no metastatic potential has been reported. Complete surgical resection is mandatory to prevent local recurrence. MRI provides excellent presurgical delineation of the tumor and confirms its fatty nature. Histology demonstrates the presence of lipoblasts in different stages of maturation; cytogenetic evaluation often discloses chromosomal anomalies of tumoral cells. A case of lipoblastoma of the buttock in a 10 month infant associated with anomalies of chromosome 8 is reported.

We report two fetuses with congenital bowing of the long bones. Clinical and radiological features led us to consider two conditions: the Stüve-Wiedemann syndrome and the neonatal Schwartz-Jampel syndrome type 2. Similarities between the two syndromes are discussed.

Three pediatric cases of malignant rhabdoid tumor of the neck are described. Clinical data and imaging findings (US, CT and MRI) are stressed. The mass was well defined, containing punctate calcifications in two cases and encasing the vessels in two other cases. Two patients were treated with a chemotherapy regimen according to MMT 89 SIOP protocol, one had chemotherapy and radiotherapy. Two children died of progressive disease; the remaining child who had complete surgical removal of the tumor is on remission 17 months after diagnosis.