case_images: PMC10869318_01
case_images: Contrasted abdominal computed axial tomography in the arterial phase.. A retroperitoneal tumor (T) is observed without contrast enhancement, with displacement of the body and tail of the pancreas (red arrow), which surrounds the celiac trunk and its branches (blue arrows).
case_images: cureus-0016-00000052405-i01.jpg
case_images: PMC10869318_01_cureus-0016-00000052405-i01.jpg
case_images: FIG1
case_images: It surrounded the vascular structures of the celiac trunk without compromising its caliber (Figure 1).
case_images: Surgical piece.. Retroperitoneal ganglioneuroma measuring 9 cm x 8 cm.
case_images: cureus-0016-00000052405-i02.jpg
case_images: PMC10869318_01_cureus-0016-00000052405-i02.jpg
case_images: FIG2
case_images: Consequently, the decision was made to opt for a complete resection of the lesion with vascular dissection and preservation of the pancreas and duodenum (Figure 2).
case_images: Histopathological features.. (A) The Schwannian stroma is composed of uniform, spindle cells grouped in fascicles (red arrows); the mature ganglion cells (blue arrows) correspond to abundant eosinophilic cytoplasm and an eccentric basophilic nucleus. (B) S100 stains both ganglion cells and Schwannian stroma. (C) Ganglion cells are positive for synaptophysin.
case_images: cureus-0016-00000052405-i03.jpg
case_images: PMC10869318_01_cureus-0016-00000052405-i03.jpg
case_images: FIG3
case_images: The conclusive diagnosis was that of a pancreatic ganglioneuroma, specifically the mature subtype (Figure 3).