case_images: PMC11831054_01
case_images: Computed tomography of abdomen and pelvis (CTAP) coronal and axial sections show the extent of the intra-abdominal mass. Note the distinct fat plane between the mass and the pelvic organs (blue arrow).
case_images: bcr-18-2-g001.jpg
case_images: PMC11831054_01_bcr-18-2-g001.jpg
case_images: F1
case_images: A CT scan of the abdomen and pelvis revealed a large lower abdominal mass measuring 17.4 cm in diameter (figure 1).
case_images: PMC11831054_02
case_images: MRI showing the extent of the mass. (A) Axial view. (B) Sagittal view.
case_images: bcr-18-2-g002.jpg
case_images: PMC11831054_02_bcr-18-2-g002.jpg
case_images: F2
case_images: An abdominal MRI showed a homogenous mass that measured 15.9x9.2x2.3 cm and appeared to be separate from the adjacent uterus, ovary and anterior abdominal wall concerning possible DT versus primary mesenteric mass (figure 2).
case_images: PMC11831054_03
case_images: PMC11831054_04
case_images: PMC11831054_05
case_images: Histopathological slide x2 magnification showing colonic wall layers with desmoid tumour arising from the muscularis propria and subserosa (black arrow).
case_images: bcr-18-2-g003.jpg
case_images: PMC11831054_05_bcr-18-2-g003.jpg
case_images: F3
case_images: Histopathological analysis revealed desmoid fibromatosis (DF) involving the subserosa and muscularis propria of the caecum at the ileo-caecal junction (figure 3), measuring roughly 17.5 cm in size, had negative resection margins and no evidence of nodal metastasis within 44 harvested lymph nodes.
case_images: Bland spindle cells arranged in longitudinal fascicles. (A) x4 and (B) x20 power magnifications.
case_images: bcr-18-2-g004.jpg
case_images: PMC11831054_05_bcr-18-2-g004.jpg
case_images: F4
case_images: Microscopic analysis suggested a less aggressive variant of the DT (figure 4), supported by positive staining for beta-catenin (figure 5) and vimentin, and negative staining for pan-cytokeratin, smooth muscle actin, CD117, CD34 and S-100.
case_images: Nuclear beta-catenin staining.
case_images: bcr-18-2-g005.jpg
case_images: PMC11831054_05_bcr-18-2-g005.jpg
case_images: F5
case_images: Microscopic analysis suggested a less aggressive variant of the DT (figure 4), supported by positive staining for beta-catenin (figure 5) and vimentin, and negative staining for pan-cytokeratin, smooth muscle actin, CD117, CD34 and S-100.
case_images: PMC11831054_06