[Kawasaki disease and multisystem inflammatory syndrome in children. Differences, and similarities in a pediatric center in Mexico].

Objective: To evaluate the differences and similarities in clinical picture, laboratory findings and outcomes between children's with Kawasaki Disease (KD) versus multisystem inflammatory syndrome (MIS-C).

Methods: We conducted a retrospective, comparative study from children with Kawasaki Disease (KD) hospi-talized in Sinaloa Pediatric Hospital from January 1, 2004, to March 31, 2020, and patients with multisystem inflammatory syndrome (MIS-C) according with World Health Organization (WHO) case definition criteria be-tween May 1, 2020 and May 31, 2021. Demographic characteristics, epidemiological data, clinical features, laboratory findings, type of treatment and clinical outcomes were compared among both groups.

[Pericarditis and pericardial effusion as the first presentation of systemic lupus erythematosus. Case report].

Background: Acute pericarditis is rare in children; it can evolve to effusion or even cardiac tamponade. The main infectious agents are viruses and bacteria. The pharmacological treatment includes NSAIDs; just a few patients need pericardiocentesis.