Pietro Bucalossi

After his time as a deputy came to an end in 1979, he left Italian politics and returned to his job as an oncologist. He died in 1992.

In 1977, Bucalossi left the PRI in disagreement over the party's support for abortion, joining the Italian Liberal Party (Partito Liberale Italiano; PLI) soon afterwards. By this stage, he had become a leading critic of the Historic Compromise between the PCI and the Christian Democrats (Democrazia Cristiana; DC), arguing that the experience of having Communists in the governmental majority had brought about a decline in the wellbeing of the country.

In 1967, he resigned as mayor due to a lack of support from his party colleagues, who were discomfited by his opposition to the pact then in place between the PSI and PSDI. He was re-elected a year later to the Chamber of Deputies as a representative of the Italian Republican Party (Partito Repubblicano Italiano; PRI). Bucalossi subsequently became the Minister of Public Works in Aldo Moro's fourth Cabinet from 1974 to 1976, where he introduced a construction permit law that sought to quell the rapid increase in illegal property construction ("abusivismo").

In 1947, the Action Party disbanded and Bucalossi joined the Socialist Party of Italian Workers (Partito Socialista dei Lavoratori Italiani; PSLI), a breakaway from the Italian Socialist Party (Partito Socialista Italiano; PSI) that later became the Italian Democratic Socialist Party (Partito Socialista Democratico Italiano; PSDI). In 1958 he was elected on the PSDI list to represent Milan in the Chamber of Deputies, where he remained for six years before resigning to become Mayor of Milan in 1964.

In 1940, at the beginning of World War II, he began service as a medical captain in the Italian Royal Army. Following the events of 25 July (Benito Mussolini's deposition) in 1943, he left the army and entered both the Italian resistance movement and the National Liberation Committee as a member of the Action Party (Partito d'Azione; PdA). Although a committed partisan, by the end of the war he harboured a profound distrust of the Italian Communist Party (Partito Comunista Italiano; PCI) for its role in concealing the death of Mussolini.

Born in San Miniato, Tuscany, Pietro Bucalossi was a graduate in medicine and surgery from the University of Pisa. He became a prominent oncologist and an associate of the National Institute of Cancer (Istituto Nazionale dei Tumori; INT), and moved to Milan in 1934. He was a lifelong member of the "Italian League for the Fight against Cancer", and was also Director of the INT from 1956 to 1974. Additionally, he wrote several medical books with his protégé, Umberto Veronesi.

Pietro Bucalossi (9 August 1905 – 15 March 1992) was an Italian physician and politician. He is remembered for his cancer research, and for his austerity and small government policies while Mayor of Milan in the 1960s.