FIELD: medicine.
SUBSTANCE: histologic examination of transverse section is performed through all the layers of arachnoid cyst walls with previous alignment of the piece in paraffin on the edge and study the state of lining and connective-tissue membrane. In case the wall of the cyst is covered in flat arachnoendothelium with hyperchromatic nucleus, the cyst is regarded the non-proliferating, the prognosis is favorable. In case the wall of the cyst is covered with round-shaped arachnoidendothelium with the zones of amplified proliferation of arachnoidendothelium in form of multirowed layer and/or vertical cells alignment, it is regarded as proliferating - the prognosis is unfavorable.
EFFECT: morphologic prediction of children arachnoid brain cyst progression.
1 dwg, 2 dwg, 1 tbl, 2 ex
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