14 November 2023
: Case report 
Immune Checkpoint Inhibitor-Induced Pure Red Cell Aplasia: A Review of 2 Cases in Metastatic Melanoma
Challenging differential diagnosis, Unusual or unexpected effect of treatment, Diagnostic / therapeutic accidents, Rare disease, Adverse events of drug therapy, Clinical situation which can not be reproduced for ethical reasons
Libardo Rueda Prada
12ABCDEFG*, Tatjana Gavrancic12ABCDE, Miguel O. Cadena Sanabria 3DF, Igor Dumic 14CDE, Kirk Bourgeois5B, Rebecca L. King6B, Yiyi Yan 17DEF
DOI: 10.12659/AJCR.941789
Am J Case Rep 2023; 24:e941789
Figure 2. (A) Bone marrow aspirate and (B) core biopsy show hypercellular bone marrow with markedly decreased and left shifted erythropoiesis. Only rare scattered pronormoblasts were identified on the aspirate, and the biopsy showed inconspicuous erythroid islands with virtually no maturation. There was background megakaryocytic and granulocytic hyperplasia. (A) Wright Giemsa, 600× oil. (B) Hematoxylin and eosin, 200×.