The Azygos Lobe

Wrisberg (1778) was the first to give the anatomical description of this lobe. Stibbe (1919) reviewed 23 cases from the literature including one of his own. Since 1923 radiologists have often reported this abnormality. Litten (1929) gives a frequency of 0.07 per cent, while Le Bourdelles and Jalet (1931) give 2.6 per cent for the occurrence of the azygos lobe in chest radiographs. The cases reported so far include two by Cairney (1923), fifty by Bendick and Wessler (1928), three by Emil (1929), twelve by Illig (1929), ten by Vollmar (1930), sixteen by Jalet (1930), seventeen by Zawadowski (1930), seven by Orosz (1932), two by Cockayne (1933), one by Vita (1933), three by Bottaliga (1933) and one by Choussat (1938). Dr. P4 Kesavaswamy, late radiologist, King George Hospital, Vizagapatam, showed the writer in 1939 radiographs of two cases of azygos lobe. The January issue of the Journal of Indian Medical Association contains reports of two more cases from the same hospital. The two cases were discovered in an Indian