case_images: PMC10799244_01
case_images: Selected axial CT cuts of the pelvis with oral and IV contrast (Arterial phase) from above downward (A-D), showing the mentioned gluteal mass measuring about 9 x 15 x 0.5 cm3. The boundaries of the lesion were not clearly defined and the dimensions were assumed based on its mass effect on the adjacent structures. The lesion consisted of mixed tissues (fat predominantly, fluid and calcifications). The fluid portion appeared on the right aspect of the gluteal region with high density, indicating mucinous/proteinaceous content. Extensions into the ischio-rectal fossa are noted with minimal pre-coccygeal components seen as well.
case_images: rjad731f1.jpg
case_images: PMC10799244_01_rjad731f1.jpg
case_images: f1
case_images: The lesion consists of mixed tissue (fat predominantly, fluid and calcifications) and is seen exerting mass effect on the adjacent muscles and extending into the ischioanal, ischiorectal fossa and pre-coccygeal region (Figs 1 and 2).
case_images: Selected sagittal CT cuts of the pelvis with oral and IV contrast (Venous phase) from left to right sides of the body (A-D), showing the mentioned gluteal mass. The cystic component of the mass is noted at the right gluteal region and the pre-coccygeal portion is well shown in C.
case_images: rjad731f2.jpg
case_images: PMC10799244_01_rjad731f2.jpg
case_images: f2
case_images: The lesion consists of mixed tissue (fat predominantly, fluid and calcifications) and is seen exerting mass effect on the adjacent muscles and extending into the ischioanal, ischiorectal fossa and pre-coccygeal region (Figs 1 and 2).
case_images: Selected sagittal MRI images (T1-sequence) without (A) and with contrast (B), both showing the extension of the mass with a visible pre-coccygeal component. The tumor is seen composed of mixed solid (predominantly fat) and cystic (fluid) components. The cystic component appears hyper-intense on the STIR sequence (C).
case_images: rjad731f3.jpg
case_images: PMC10799244_01_rjad731f3.jpg
case_images: f3
case_images: Minimal pre-coccygeal extension is noted suggesting type 1 SCT (Fig. 3).