Solve this exciting clinical case specific to your field of interest via Docplexus’ Clinical Case Challenge. Join your fellow doctors to discuss and answer today’s challenge! Case presentation A 38-year-old male patient was referred to the hospital after outpatient labs revealed low hemoglobin.

A past medical history of acquired immunodeficiency syndrome and noncompliant antiretroviral therapy (ART) regimen was reported; the last CD4 count was unknown. He also gave a one-week history of melanotic stools, generalized weakness, and progressively worsening shortness of breath. Vitals Pulse – 106 beats per minute Oxygen saturation – 98% Blood pressure – 122/80 mmHg Temperature - Afebrile Laboratory investigations Hemoglobin – 2.6 g/dL Hematocrit – 7.5% Mean corpuscular volume – 95.4 fL Reticulocyte percentage – 0.2 WBC – 9 × 10 9 /L Platelet count – 170 x 10 9 /L Ferritin level  –  709…