41. The specific kidney injuries induced by analgesics are renal papillary necrosis and high blood pressure, and anemia. 42. Inhibition of cyclooxygenases therefore rather selectively damages the renal papillae, increasing the risk of renal papillary necrosis. 43. Histologically, papillary fibroelastomas have branching avascular papillae, composed of collagen, that are covered by endothelium. 44. The semilunar aortic valve is at the base of the aorta and also is not attached to papillary muscles. 45. One type, the intraductal papillary mucinous neoplasm ( IPMN ) was first described by Japanese researchers in 1982. 46. Grawitz concluded that only alveolar tumours were of adrenal origin, whereas papillary tumours were derived from renal tissue. 47. This can lead to the subsequent displacement of the papillary muscles and the dilatation of the mitral valve annulus. 48. The lamina propria, like all forms of connective tissue proper, has two layers : papillary and dense. 49. Microscopically, the vesicles in lymphangioma circumscriptum are greatly dilated lymph channels that cause the papillary dermis to expand. 50. Moreover, papillary carcinomas have an indolent growth, and 40 percent of cases spread out of the capsule.
