Sven Halvar Löfgren

Sven Halvar Löfgren (1 March 1910 – 16 June 1978) was a Swedish pulmonologist known for describing Löfgren syndrome, a form of sarcoidosis.

Early life, education and career Löfgren was born in 1910 in Ulricehamn, Västra Götaland County, Sweden, to Sven August Löfgren and Hilma Ottilia Eliasson. Löfgren described how erythema nodosum, enlarged lymph nodes on the root of the lung (called hilar lymphadenopathy) and extinguished tuberculin tests were symptoms of an acute but often transient form of sarcoidosis. He became a rallying name at symposia and congresses and, in 1958, helped found the International Sarcoidosis Committee. Löfgren was honored in 1971 with a professorship for his scientific contributions.

Personal life Löfgren was said to be shy. He was the brother of engineer . In 1935 he married physician Märta Elisabet Ollén; the couple had four children: Halvar Olof, Folke Sven, Karin Elisabet, and Barbro Märta.

Löfgren died on 16 June 1978 in Stockholm.