Gastric Gastrointestinal Stromal Tumor Incidentally Detected With Meckel Scintigraphy.

A 17-year-old boy presented with fatigue, hypoxia, palpitations, and anemia (hemoglobin 3.5 g/dL). The search for the etiology of the bleeding began with a Meckel scan. A photopenic region in the gastric body and a region of abnormal tracer uptake in the right midabdomen were unexpected findings. Further investigation with ultrasound and computed tomography revealed a gastric mass, which proved to be a gastrointestinal stromal tumor at pathology. The right-sided tracer uptake resulted from stasis in the collecting system of a malpositioned right kidney, a cause of false uptake in a Meckel scan.

Bone Scintigraphic Findings in MRSA Osteomyelitis.

Methicillin-resistant Staphylococcus aureus osteomyelitis is a severe form of infection characterized by multifocal or multiple segmental osseous involvement and subperiosteal abscess formation with increased frequency of extraosseous complications including pyomyositis, septic thrombus, and septic arthritis. Bone scan showed long segment and/or multifocal involvement in 4 of 5 patients with areas of abnormal increased and decreased uptake. The clinical presentations included limp and/or pain. Joint involvement was seen in 4 cases. Bone scan abnormalities correlated well with MRI findings of severe and extensive bone disease, abscess formation, muscle, as well as joint and soft tissue involvement.

Thoraco-abdominal enteric duplication cyst in association with neurenteric cyst, axial skeletal anomalies, and malrotation.

We report a case of a 2-year old boy with cervicothoracic deformity with vertebral rib anomalies, neurenteric cyst, separate thoracoabominal enteric duplication cyst, concurrent intestinal malrotation, and dextroposition of the heart. This combination of abnormalities is very rare. When these lesions are suspected, the patient must be investigated carefully. This case is presented to show the importance of cross-sectional imaging (MR and CT) for surgical planning.

Recurrent idiopathic tumoral calcinosis in a child postoperatively.

Tumoral calcinosis is an uncommon disease characterized by the deposition of calcium salts and crystals in the periarticular soft tissues. It is almost entirely a disease of adults. Histological and radiologically, however, features of this condition are identical regardless of age. Lesions in adults usually involve the hip joint and tend to recur following surgery, whereas in children surgery is often curative. We report a case of recurrent tumoral calcinosis of the sternum of a Hispanic identical-twin female infant.

Nuclear Medicine in Pediatric Musculoskeletal Imaging.

The pediatric skeleton is a dynamic structure. Bone scintigraphy depends on bone metabolism and therefore is particularly applicable to changes occurring in the physes (growth-plates). A knowledge of the physiologic changes in the growing skeleton as well as the disease processes affecting the different pediatric age brackets are necessary to accurately solve clinical diagnostic problems with bone scintigraphy. Bone scintigraphy is a readily available, low-radiation imaging procedure. In this article, the common pediatric skeletal aberrations (appendicular growth alterations, hip pain, back pain, some aspects of trauma, inflammatory and infectious processes, and some common benign neoplastic occurrences) that can be addressed by nuclear imaging are discussed.