Right thoracic ectopic kidney in a child with breathing difficulties--sonographic diagnosis.

Congenital intrathoracic ectopic kidney is a rare congenital abnormality that is usually found as an incidental lesion on chest radiographs. We report the case of a 6-month-old male with a 1-day history of breathing difficulties whose chest radiograph revealed a soft tissue right basilar mass. Further investigation utilizing ultrasound revealed a thoracic kidney. This case demonstrates the importance of sonography as a diagnostic tool in identifying thoracic kidneys in the pediatric age group.

Complex carpal malformation without a cause.

Carpal dislocation is an uncommon event. We present a 4-year-old male child who had the clinical appearance of a Madelung's deformity; however, he failed to fulfill the radiological criteria for a Madelung's deformity. The carpal bones had not yet ossified making it difficult to arrive at a diagnosis using radiograph alone. Magnetic resonance imaging was diagnostic because of the ability to delineate the carpal cartilaginous ossification centers. Chronic wrist dislocation should be considered in the differential diagnosis of a long-standing wrist deformity that clinically resembles a Madelung's deformity in a young child.

Pott's puffy tumor: Sonographic diagnosis.

We report a case of a child with Pott's puffy tumor (PPT) in which ultrasonography contributed to making the diagnosis. The clinical presentation and laboratory investigations were inconclusive, and the diagnosis of PPT was made by ultrasonography and subsequently confirms CT scan and MRI.