Pulmonary thrombosis in a male patient with fatal pneumonia and cyanosis: detail of right pulmonary artery in section, completely occluded by clot, which has also spread to left arteries. Watercolour by Barbara E. Nicholson, 1954.

Ashford, Middlesex, 1954.

1 painting : watercolour, with gouache ; sheet 13.2 x 15.2 cm

Barbara Evelyn Nicholson (1906 – 1978) trained at the Royal College of Art, graduating in 1923. She began her artistic career as a medical illustrator and was a founder member of the Medical Artists Association, where she is recorded as serving on an exhibition committee in October 1949. By 1951, she had illustrated G.F. Gibberd, A short textbook of midwifery (2nd ed., London: J. & A. Churchill, 1941) and Philip Wiles, Essentials of orthopaedics (London: J. & A. Churchill, 1949). The Medical Artists Association records last list her, in 1951. In the 1950s her focus moved to botanical subjects and from the late 1950s – 1970s she was a prolific botanical illustrator.

Thrombus in pulmonary artery Lettering inscribed in pencil as key, typed accompanying note states that radiograph showed particularly dense opacity, leading to the diagnosis of pulmonary embolism, however, no source for this was found at post-mortem, thus the diagnosis was that of pulmonary thrombosis following pneumonia Bears number: 395/1954

The watercolours and pen and ink drawings held by Wellcome Collection were painted by Barbara Nicholson at Ashford Hospital, Ashford, Middlesex, between 1946 and 1951, at the request of the surgeon Norman Matheson.

Wellcome Collection 35123i

Presented to the Wellcome Institute Library in 1987 by Ashford Postgraduate Medical Centre, as part of a collection of medical illustrations by Barbara E. Nicholson.