[A case of XXXX showing various heteroptics due to @entity1188 of right parieto-occipital lobe].

@entity1 @entity227 @entity384 @entity12977 @entity1188 @entity3174
A case of @entity12977 showing various heteroptics due to @entity1188 of the right parieto-occipital lobe was reported. The @entity1 was 48-year-old male. Angiography revealed an obstruction of the right internal carotid artery, @entity384 of the right posterior communicating artery, and obstructions of the right parieto-occipital artery and calcarine artery. A low density area was found in right occipital lobe by CT. MRI clearly identified lesions in the right cuneus and precuneus. Pseudopsia in the left homonymous quadrantanopsia, various types of @entity227 in the remaining visual field, and moreover, palinopsia were existed. @entity227 was recognized in the early stage after the onset, while the pseudopsia was recognized about one month after the onset. Both abnormalities tended to improve from the peripheral region with the improvement of the defect in the visual field. Administration of @entity3174 resulted in an improvement in the pseudopsia but it resulted in an aggravation in the @entity227 . Thus, the mechanisms of development of this phenomena were thought to be different from each other. It was found by dynamic CT that the blood flow in the primary visual cortex was rather increased in the affected site in comparison with that in the healthy site. It was speculated that the pseudopsia in the defective region of the visual field reflected a pathological repair process represented by a development of the collateral circulation. On the other hand, the @entity227 was thought to originate from visual unstability due to incomplete damage of the visual pathway at the affected site.
