Medical milestones, landmark publications, and notable births and deaths associated with December 9.

Events

---

Births

1858 – Nikolay Markianovich Volkovich (1858-1928), Ukrainian surgeon; described Volkovich-Kocher sign of appendicitis

1913 – Saul Allen Mackler (1913-2007), American thoracic Surgeon; described Mackler’s triad (1952)

---

Deaths

1974 – Gordon David Oppenheimer (1900-1974), American surgeon and urologist; one of the three authors of the foundational 1932 description of regional ileitis, later named Crohn’s disease

1979 – Thomas Philip Ayre (1901-1979), English anaesthetist; described Ayre T-piece (1937)

1991 – Margaret Ruth Dix (1911-1991), English neuro-otologist; described the Dix-Hallpike Test (1952)

2001 – Lisa Welander (1909-2001), Swedish neurologist; described Welander distal myopathy (1951), and Wohlfart-Kugelberg-Welander syndrome (1956)

---

Further reading