Gastric schwannoma: Computed tomography and perigastric lymph node characteristics

Figure 2 Gastric schwannoma in a 56-year-old woman presenting with epigastric discomfort and black stool. A: Arterial phase-enhanced computed tomography (CT) shows an endoluminal tumor with deep ulceration (arrow); B: Gross examination revealed that the tumor’s cut surface was yellowish, with an ulcer as observed in the CT image; C: Tumor is primarily composed of spindle-shaped cells with a characteristic peripheral lymphoid cuff (hematoxylin and eosin stain; original magnification, × 100); D: The tumor is strongly positive for S-100 protein.