Background And Aims: X lymphoproliferative syndrome type 1 (XLP1) is a rare inborn error of immunity due to mutations of , encoding for slam-associated protein (SAP). The clinical phenotype includes severe mononucleosis, hemophagocytic lymphohistiocytosis (HLH), and B-cell lymphomas.
Methods: We report the case of a child affected with XLP1 who presented with an incomplete HLH, triggered by Epstein-Barr virus (EBV) and treated with rituximab, involving orbits and paranasal sinuses.
Background: The phenotype of early embryonic fourth branchial arch defects encompasses a wide spectrum of clinical conditions including DiGeorge syndrome (DGS), velocardiofacial syndrome, and conotruncal anomaly face syndrome. The majority of the patients have a 22q11.2 deletion.
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