A member of the Party of National Mobilization, he served two terms as the Governor of Mato Grosso do Sul.

The first term (1980–83) was an appointed role, before being elected to office in 1991.

A civil engineer by profession, he graduated from Mackenzie Presbyterian University, São Paulo.

Pedrossian died on 22 August 2017 in Campo Grande, at the age of 89.

[1] Harry Amorim Costa • Londres Machado • Marcelo Miranda Soares • Londres Machado • Pedro Pedrossian • Wilson Barbosa Martins • Ramez Tebet • Marcelo Miranda Soares • Pedro Pedrossian • Wilson Barbosa Martins • José Orcírio Miranda dos Santos • André Puccinelli • Reinaldo Azambuja • Eduardo Riedel