Unilateral reversible posterior leukoencephalopathy syndrome after coiling of an aneurysm.
BACKGROUND
Reversible posterior leukoencephalopathy syndrome (RPLS) is radiologically characterized by symmetrical subcortical areas of vasogenic edema that are preferentially parieto-occipital, and it typically resolves after appropriate treatment.


METHODS
We present a patient with strikingly unilateral RPLS that developed 21 days after coiling of an anterior communicating artery aneurysm and several days of triple-H therapy. Cortical and subcortical vasogenic edema and enhancement developed only in the left hemisphere, with a pattern suggesting RPLS. After 7 months the lesions had nearly completely resolved.


CONCLUSIONS
The pathophysiological mechanism underlying RPLS is still not well understood, which makes it difficult to explain the unilateral appearance in this case. Since the imaging findings may be confused with other conditions such as ischemia, recognition of RPLS after coiling is necessary in order to avoid inadequate treatment.
Department of Neurology, MCH Westeinde Hospital, The Hague, The Netherlands.
Willemijn
W
Huijgen
Department of Neurology, MCH Westeinde Hospital, The Hague, The Netherlands.
Bas
B
van der Kallen
Department of Neurology, MCH Westeinde Hospital, The Hague, The Netherlands.
Jelis
J
Boiten
Department of Neurology, MCH Westeinde Hospital, The Hague, The Netherlands.
Geert
G
Lycklama À Nijeholt
aneurysm; coiling; endovascular procedures; reversible posterior leukoencephalopathy syndrome; unilateral