“…Although MCL typically shows indolent histological features with a low proliferation rate, it is known to have a poorer prognosis than the other small cell lymphomas with a median survival of only 3-4 years. A blastoid variant of MCL shows large nuclei, a high proliferation activity, and an aggressive course [1,13,23,25,36,37]. Typically, MCL is presented in middle-aged or elderly patients [31] who have at diagnosis an advanced disease with generalized lymphadenopathy and often extranodal manifestations such as infiltrations of bone marrow, gastrointestinal tract, spleen, or Waldeyer's ring [1,3,5,6,10,22,24,26,28,35,36,38,39].…”