Case Report

Vitamin B12 Deficiency and Hemoglobin H Disease Early Misdiagnosed as Thrombotic Thrombocytopenic Purpura: A Series of Unfortunate Events

Table 1

Patient’s blood results: (1) during admission, (2) after the transfusion of 4 packed RBCs units, (3) after the CVC insertion, hemothorax and intubation, (4) at discharge after having received therapy for B12 deficiency, (5) and finally during reevaluation as an outpatient.

(1) Admission (2) After transfusion(3) After CVC placement(4) Discharge(5) Reevaluation

Hematocrit (%)10.823.1718.828.835.2
Hemoglobin (gr/dL)3.17.996.369.210.9
Red Blood Cells (106/μL)1.32.742.293.545.06
Mean Corpuscular Volume (MCV) (fL)84.582.3185.181.369.6
Mean corpuscular hemoglobin (MCH) (pg)29.128.2429.325.921.5
Mean corpuscular hemoglobin concentration (MCHC) (g/dL)33.134.333.831.930.9
Reticulocytes (%)0.13
White blood cells (103/μL)8.503.99.56.3410.81
Neutrophils (%)90.295.495.46166
Lymphocytes (%)8.43.83.816.924.8
Monocytes (%)0.60.60.68.45.6
Eosinophils (%)0.10.060.0612.93.7
Platelets (103/μL)1305525359252

Prothrombin time, PT (Sec)12.912.91513.211.2
International Normalized Ratio (INR)1.121.141.331.170.99
Activated partial thromboplastin time (APTT) (sec)33.634.830.930.627.8
Fibrinogen (mg/dL)155160139327338.4

Lactic dehydrogenase (LDH) (U/L)370021001769182252
Coombs Test NegativeNegative