(Updated) USMLE Step 3 Study Guide: Guaranteed A+ Guide Solution

Pseudogout associations (Ans - hemochromatosis, hyperparathyroidism, acromegaly, hypothyroidism Gout crystals (Ans - negatively birefringent needles Pseudogout crystals (Ans - positively birefringent needles Vasculitis associated with chronic Hep B (Ans - polyarteritis nodosa Vasculitis associated with chronic Hep C (Ans - cryoglobulinemia Best blood test for polyarteritis nodosa (Ans - There is none. Get abdominal angiography first, then biopsy of muscle, skin, or sural nerve. Churg-Strauss (Ans - vasculitis + eosinophilia + asthma Takayasu's arteritis (Ans - young asian female with diminished pulses (usually proceeded by fatigue, weight loss, arthralgia, anemia, elevated ESR) Best test for Takayasu's (Ans - aortic angiography or MRA Bite cells on blood smear (Ans - G6PD