The objective is to describe disease progression and treatment patterns of acromegaly in patients with inadequate biochemical control, assess how biochemical control will impact disease progression and treatment pathways and estimate the economic efficiency of pasireotide long-acting (PASI) in a treatment of acromegaly in Finland. PASI is compared to pegvisomant + somatostatin analoque (PEG+SSA) in patients with inadequately controlled acromegaly.