Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Download Section PDF ++ Table Graphic Jump Location|Download (.pdf)|Print CHF congestive heart failure COPD chronic obstructive pulmonary disease CLL chronic lymphocytic leukemia CML chronic myelogenous leukemia CMV cytomegalovirus CN cranial nerve CNS central nervous system CSF cerebrospinal fluid CVP central venous pressure DDX differential diagnosis DIP distal interphalangeal joint EBV Epstein–Barr virus HIT heparin-induced thrombocytopenia HSV herpes simplex virus ITP idiopathic immune thrombocytopenia LLQ left lower quadrant LUQ left upper quadrant LV left ventricle MCP metacarpal–phalangeal joint MI myocardial infarction MS multiple sclerosis MTP metatarsal–phalangeal joint NBTE nonbacterial thrombotic endocarditis PE pulmonary embolism PIP proximal interphalangeal joint RA rheumatoid arthritis RLQ right lower quadrant RUQ right upper quadrant RV right ventricle SBE subacute bacterial endocarditis SLE systemic lupus erythematosus TTP thrombotic thrombocytopenic purpura