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Description: a) In a few areas, hyalinization could be observed in the vascular channels (black arrow, H & E, 4×).
(b) The connective tissue stroma exhibited numerous vascular channels in varying shapes and sizes lined by a
single layer of endothelium intricately admixed with fibrous stroma surrounded by spindle cells (black arrow,
H & E, 10×). (c) The collagen fibers were interspersed with plump, stellate cells haphazardly (black arrow, H
& E, 40×).
