Bibliogr. s. 101-102

Background: A case of congenital abdominal dumbbell fashion neuroblastoma with invasion of the spinal canal detected by ultrasonography (US) is presented. Case report: A 3-week-old male neonate was admitted to the hospital with a palpable mass in the left lumbar region. Ultrasound examination was performed on the same day. It disclosed a pathologic mass filling the left side of the retroperitoneal space - displacing laterally and inferiorly the left kidney. The second part of the tumor was located above the Gerot's fascia in the muscles and infiltrated the spinal canal via lumbar intervertebral foramens. Computer tomography scanning confirmed the presence of solid masses in these locations. Urinary excretion of vanillin-mandelic acid (VMA) was within normal range, ferritin level was elevated (447 μg/ml). Bone scintigraphy showed metastases to the left clavicle. There were no changes in bone marrow. Diagnosis of an undifferentiated malignant neuroblastoma was established in histopathological examination. Conclusions: Spinal ultrasonography is highly recommended in neonates and infants with retroperitoneal tumors