Fig. 1From: Detection of GNAS mutations in intramuscular / cellular myxomas as diagnostic tool in the classification of myxoid soft tissue tumorsa Shows a hypocellular lesion with small bland cells, with oval nuclei and inconspicuous nucleoli and abundant myxoid stroma. b Embedded in the myxoid matrix are scattered blood vessels and small bland cells. c At the periphery of this lesion muscle fibers are split up by the mucoid matrix. d This lesion shows an increase in cellularity, accompanied by an increase in vascularity and collagenous stroma. e Area with spindled cells showing cytonuclear atypia. f Immunohistochemistry reveals focal CD34 expressionBack to article page