Also, they determined that when the spleen reached or extended below the lower third of the left kidney, this was highly specific for splenomegaly despite a low sensitivity (sensitivity 20%, specificity 93%). The study validated the use of a simple splenic length measurement for splenic CT volume. When splenic length exceeds 10 cm, a diagnosis of splenomegaly should be made. This clinically practical, accurate, simple measurement replaces multiple-measurement, time-consuming methods, and allows daily routine follow-up, the authors reported.
1 This volume will in addition discuss RNA viruses and bring a historical perspective of where studies began to a more recent molecular approach and vaccine successes in tumor viruses.  This volume will also cover other known oncogenic viruses associated cancers in other mammals in addition to humans.
Etiology. Numerous different viruses can give rise to viral arthritis, including parvovirus B19, hepatitis viruses (hepatitis A virus [HAV], hepatitis B virus [HBV], and HCV), rubella virus, alphaviruses and flaviviruses, and retroviruses.