Acute nonspecific, or primary, mesenteric lymphadenitis is a self-limiting inflammatory condition affecting the mesenteric lymph nodes, whose presentation mimics appendicitis or intussusception. It typically occurs in children, adolescents, and young adults. White blood count and C-reactive protein are of limited usefulness in distinguishing between patients with and without mesenteric lymphadenitis. Ultrasonography, the mainstay of diagnosis, discloses 3 or more mesenteric lymph nodes with a short-axis diameter of 8 mm or more without any identifiable underlying inflammatory process. Once the diagnosis is established, supportive care including hydration and pain medication is advised. Furthermore, it is crucial to reassure patients and families by explaining the condition and stating that affected patients recover completely without residuals within 2–4 weeks.

Anomalous pulmonary venous return represents a rare congenital anomaly with wide anatomic and physiologic variability. We report a case of the newborn with a rare form of total infracardiac anomalous pulmonary venous connection (TAPVC). The pulmonary veins draining both lungs formed two vertical veins, which joined to a common pulmonary trunk below the diaphragm. This venous channel connected to the portal vein through the esophageal hiatus. The diagnosis was suggested by color Doppler sonography and confirmed by intravenous digital subtraction angiography, which allowed definition of the anatomy.

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In patients affected with acute nonspecific mesenteric lymphadenitis, it is advantageous to think of the time span for recovery in terms of ≥ 4 weeks. What is Known: • Mesenteric adenitis is a self-limiting inflammatory condition with well-characterized clinical presentation and imaging features. • A total duration of symptoms of ≤ 4 weeks is usually hypothesized. What is New: • Symptoms persist for 3 to 10 weeks in half of the patients. • At presentation, clinical and laboratory characteristics are similar in children with symptoms persisting for 2 weeks or less and in those with 45 symptoms persisting for 3-10 weeks.

Total anomalous pulmonary venous return (TAPVR) represents a rare congenital anomaly with wide anatomical and physiological variability. We report a case of a newborn with a challenging form of obstructed infracardiac TAPVR, in whom left and right pulmonary veins drained separately into the portal system. The right pulmonary venous sinus connected to the left branch of the portal vein, whereas the left venous sinus connected to the splenic vein. Surgical repair consisted of the creation of a common retrocardiac venous trunk which was anastomosed to the left atrium. The postoperative course was characterized by persisting congestion of the right lung. Two months later, right pulmonary vein hypoplasia was successfully enlarged with autologous pericardium.