Case \# 6. History . 66 year old female admitted for lung biopsy - Past Medical History . Excessive bleeding post tonsillectomy at age 17 - Patient had "heary" menses until age 55 - Family Medical History . No known family history of bleeding except one son with excessive bleeding post tonsillectomy. Patient is of Jewish ancestry with both parents from Russia. Case \# 6 Lab Results . Platelet count = 256,000 - PT 12 seconds - APTT 96 seconds What are the possibilities of the increased APTT? What further testing is indicated?
