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Insights into Imaging
Fig. 20 | Insights into Imaging

Fig. 20

From: Primary and secondary tumors of the peritoneum: key imaging features and differential diagnosis with surgical and pathological correlation

Fig. 20

High-volume pseudomyxoma originating from a ruptured appendiceal mucinous neoplasm, with coexistence of low-grade and high-grade histologic features. a, b) Axial CT images in the portal phase show high volume of disease, with homogenous loculated ascites representing acellular mucin pools (yellow dots). c Surgical correlation of acellular mucin pools, appearing as yellowish gelatinous material. d, e Same axial CT images in the portal phase show coexistence of hypodense acellular mucin with dense omental disease (red dots), representing cellular areas of mucinous carcinomatosis. f Surgical correlation of mucinous carcinomatosis, appearing as fleshy reddish solid material. g, h Axial CT images in the portal phase at a lower level show a hypodense tubular image in the right iliac fossa (yellow arrows) with calcified walls (red arrowheads), representing an appendiceal mucinous neoplasm. Perforation can also be seen in its right lateral wall (blue arrow). i Appendectomy specimen shows a perforated mucinous neoplasm with output of yellowish gelatinous material

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