A 32-year-old woman complains of bleeding gums while brushing her teeth and easy bruising of several weeksโ duration. She denies the consumption of alcohol, tobacco, or illicit drugs. Past medical history : None Physical examination Several petechiae on her legs and bruises over the knees. The results from her head and neck, cardiopulmonary, and abdominal examinations are unremarkable. No masses are palpable in the abdomen. Laboratory evaluation Normal white blood cell count, hemoglobin, and hematocrit values.
Results from serum chemistry studies are within the normal range. Her platelet count is 27,000/mm 3 . A bone marrow biopsy is performed, demonstrating the presence of numerous megakaryocytes but no evidence of malignancy. What is the most likely diagnosis? (Answer is posted in the comment section below!) *This case is from the Docplexus Editorial Team for educative purposes only.