The client's symptoms, including splenomegaly, increased basophil count, night sweats, bone pain, and a low-grade fever, suggest a progression of chronic myelogenous leukemia (CML) beyond the chronic phase. In CML, there are three main phases:
a. Chronic Phase: This is the initial phase of CML when the disease is relatively stable and often asymptomatic.
b. Accelerated Phase: In this phase, the disease becomes more aggressive and symptoms may worsen. The presence of symptoms like those mentioned in the question suggests the accelerated phase.
c. Terminal Phase (Blast Crisis): This is the most advanced and aggressive phase of CML, characterized by a high number of immature white blood cells (blasts) in the blood and bone marrow.
So, the correct answer is:
d. Accelerated
The symptoms described are indicative of the accelerated phase of CML, where the disease becomes more aggressive and less responsive to treatment.