Question

an 8-year-old male patient has renal failure as well as thrombocytopenia. he was recently at a cookout where hamburger was served. his labs are all normal except for the renal failure and thrombocytopenia this includes normal pt, ptt, inr and d-dimer. what is your diagnosis?
hus or hemolytic uremic syndrome because of e. coli o157:h7 infection
essential thrombocytosis
dic or disseminated intravascular coagulation due to sepsis
ttp or thrombotic thrombocytopenic purpura due to adamst13 deficiency

Explanation:

1. Analyze each option:

• Option 1 (HUS): Hemolytic Uremic Syndrome (HUS), especially caused by E. coli O157:H7 (often from undercooked hamburgers), presents with renal failure, thrombocytopenia, and normal coagulation tests (PT, PTT, INR, d - dimer match here).
• Option 2 (Essential thrombocytosis): It is a myeloproliferative disorder with elevated platelets, not thrombocytopenia, so this is incorrect.
• Option 3 (DIC): DIC has abnormal coagulation tests (elevated PT, PTT, INR, and d - dimer), which contradicts the normal lab results here.
• Option 4 (TTP): TTP is related to ADAMTS13 deficiency but is less associated with E. coli from hamburgers, and HUS is more likely in this context of a cookout with hamburger consumption.

Answer:

A. HUS or hemolytic uremic syndrome because of E. coli O157:H7 infection