Hemophagocytic lymphohistiocytosis (HLH) is a rare, fatal disease. Neonatal cholestasis exhibits symptoms similar to those seen in several newborn diseases. HLH is rapidly fatal; therefore, an effective and prompt differential diagnosis is vital. A 10-hour-old newborn with icterus was referred to our clinic. Laboratory examination revealed direct bilirubinemia and pancytopenia, and cholestasis developed. HLH findings were observed in the bone marrow aspiration. Induction chemotherapy as described in the HLH-2004 protocol was initiated. Despite notable improvement in clinical signs and laboratory findings, the infant died, probably due to sepsis, one week after start of chemotherapy HLH should be kept in mind in the differential diagnosis of all cholestatic patients with recently developed cytopenia. For definitive diagnosis of HLH, clinical signs and laboratory findings of the patient should be evaluated, hyperferritinemia and hypertriglyceridemia should be searched and bone marrow aspiration materials should be examined carefully.
Keywords: Hemophagocytic lymphohistiocytosis, Cholestasis, Infant
ÖZET Kolestazla Baflvuran Yenidoan ‹nfantta Hemofagositik Lenfohistiositoz: Olgu SunumuHemofagositik lenfohistiositozis (HLH) nadir ve ölümcül bir hastal›kt›r. Neonatal kolestazis birçok ciddi yenido¤an hastal›¤›nda görü-len ortak bir bulgudur. HLH h›zla ölümcül olabilece¤inden etkili ve h›zl› tan› konulmas› hayati öneme sahiptir. Klini¤imize 10 saatlik, sar›l›¤› olan bir yenido¤an sevk edildi. Laboratuar tetkiklerinde direkt bilirubinemi, pansitopeni ve kolestaz varl›¤› saptand›. Yap›lan kemik ili¤i aspirasyonunda HLH bulgular› gözlendi. HLH-2004 protokolünde belirtildi¤i flekilde indüksiyon kemoterapisi baflland›. Klinik ve laboratuar bulgularda görülen iyileflmeye ra¤men hastam›z kemoterapi bafllad›ktan bir hafta sonra olas› sepsis sebebiyle kaybedildi. HLH, sitopeni geliflen tüm kolestatik hastalar›n ay›r›c› tan›s›nda ak›lda tutulmas› gereken bir hastal›kt›r. HLH'nin kesin tan›s›n› koyabilmek için hastan›n klinik ve laboratuar bulgular› de¤erlendirilmeli, hiperferritinemi ve hipertrigliseridemi araflt›r›lmal› ve kemik ili¤i aspirasyon materyali dikkatlice incelenmelidir.