Disease characterized by insidious onset and by an absolute increased in number of circulating RBCs and in total blood volume ?

Correct answer: B. Osler's disease

A. Leukopenia
B. Osler's disease
C. Mediterranean disease
D. Aplastic anaemia

Explanation

Osler disease, or polycythemia vera, is a myeloproliferative disorder producing an absolute increase in red-cell mass and total blood volume. The other choices involve reduced white cells, a hereditary anaemia or marrow failure.

Submitted by a TestUstad contributor and published by the TestUstad editorial teamLast updated 18 September 2026

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