In 36 y.o. woman it is performer an US-guided FNAC of a round nodular lesion, localized in pericicatriceal region (a history of cesarean section), at the level of anterior abdominal wall and in proximity to the rectus abdominis muscle.
On a background of mucus and eritrocytes it is abundant cellular population characterized by epithelial component, mostly in cohesive 3D aggregates and by stromal component containing numerous capillaries and a dense population of small cells with round/oval to spindled nuclei.
Tubular epithelial 3D structures associated to abundant edematous and cellulated stroma. Cytological picture suggestive of abdominal wall endometriosis.
Stromal cells are positive for CD10: