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. 2023 Jul 27;59(8):1371. doi: 10.3390/medicina59081371

Figure 3.

Figure 3

Smooth Muscle Tumor of Uncertain Malignant Potential (STUMP). (A) Hematoxylin and Eosin (H & E)-stained section at 40× magnification showing bundles of smooth muscle cells. (B) H & E-stained section at 100× showing tumor cells with diffuse moderate-to-severe atypia. (C) H & E section at 200× revealing spindled cells showing atypia and pleomorphism. (D) H & E section at 400× depicting atypia and occasional mitosis. There was no tumor necrosis and mitotic count was less than 10/10 HPFs, consistent with the diagnosis of STUMP.