1/For the path residents taking CP call for the first time this month, I thought I’d post a short series on things to look out for when you get called to look at a blood smear. First up: pancytopenia. #hemepath
2/It’s not always possible to determine the cause of pancytopenia based on blood smear morphology alone. However, here is a (not comprehensive) list of clues you don’t want to miss:
3/Leukoerythroblastic features (presence of nRBCs and granulocyte precursors). Raises concern for bone marrow infiltration (by fibrosis, metastatic or hematologic tumors), especially if teardrop cells are present.
4/Is the patient immunosuppressed? Don’t forget to look for organisms! This is a case of disseminated histoplasmosis in an immunocompromised patient.
6/Don’t forget that megaloblastic anemia can actually present with pancytopenia. Look closely for hypersegmented neutrophils, especially if the MCV is high.