case_images: PMC6744782_01
case_images: Preoperative magnetic resonance imaging showing a 35-mm sized mass in the left cerebellum that showed low intensity on T1-weighted image (left), high intensity with perifocal oedema on T2-weighted image (middle), and heterogeneous enhancement on T1-weighted image with gadolinium administration (right).
case_images: SNI-10-152-g001.jpg
case_images: PMC6744782_01_SNI-10-152-g001.jpg
case_images: F1
case_images: T1-weighted images, high intensity with perifocal edema on T2-weighted images, and avid heterogeneous enhancement on T1-weighted images after gadolinium administration [Figure 1]. The differential diagnosis included metastasis, glioma, and abscess.
case_images: Tumour containing proliferating signet ring cells floating in abundant mucin.
case_images: SNI-10-152-g002.jpg
case_images: PMC6744782_01_SNI-10-152-g002.jpg
case_images: F2
case_images: The excised specimen was pathologically diagnosed as mucinous adenocarcinoma consisting mainly of proliferating signet ring cells, which was identical to the features seen in the primary urachal adenocarcinoma comprised a mixture of signet ring cells, mucus-producing cells, and duct-forming cells [Figure 2].