Spectrum of mucin-producing neoplastic conditions of the abdomen and pelvis: Cross-sectional imaging evaluation

Figure 17 Intraperitoneal spread of mucinous adenocarcinoma of the urachus (also called peritoneal mucinous carcinomatosis) in a 57-year-old man. A: Contrast-enhanced CT image shows a midline supravesical mass with heterogeneous attenuation. Within the mass are scattered low-attenuation areas (arrowheads), which represent mucin; B: Contrast-enhanced CT image of the upper abdomen shows low-attenuation mucinous ascites scalloping the liver margin. Note the right pleural effusion (asterisk) and diffuse nodular thickening of the peritoneum (arrowheads). CT: Computed tomography; MR: Magnetic resonance.