Make the Diagnosis: Military Service Mystery

(MedPage Today) -- Case Findings: A 21-year-old male Marine sniper returns from his fourth tour in Afghanistan with complaints of fatigue. He waited a month to seek medical attention because he believed he was simply tired from his last tour, but he has had trouble sleeping since he arrived home. Rather than dismissing his complaints as symptoms of PTSD, an alert clinician orders some blood work. The following is seen on a peripheral blood smear. What is the diagnosis?
Source: MedPage Today Gastroenterology - Category: Gastroenterology Source Type: news