case_images: PMC10864045_01
case_images: CT (a) coronal and (b) axial of the pelvis, demonstrating a 6 cm phlegmon in the right iliopsoas muscle (marked by star), with extrinsic compression of the right ureter (marked by white arrow), and the right external iliac vein (marked by triangle) and an intrauterine contraceptive device in situ (marked by black arrow).
case_images: CRIS2024-9916070.001.jpg
case_images: PMC10864045_01_CRIS2024-9916070.001.jpg
case_images: fig1
case_images: CT demonstrated a heterogenous thickening of right iliopsoas and iliacus muscles with moderate right pelvic sidewall oedema and fat stranding without a collection (Figure 1(a)). There was mass effect with compression on the external iliac vein without thrombosis and the right ureter causing right-sided hydronephrosis (Figure 1(b)).
case_images: MRI of pelvis demonstrating a 6.5 x 5.7 cm ill-defined solid mass involving right iliopsoas muscle and extending to right uterus.
case_images: CRIS2024-9916070.002.jpg
case_images: PMC10864045_01_CRIS2024-9916070.002.jpg
case_images: fig2
case_images: However, due to concerns of malignancy, these findings were corroborated by magnetic resonance imaging (MRI) pelvis which revealed a 6.5 cm ill-defined solid mass with no gas formation in the right pelvis involving the right edge of the uterus and extending laterally to the right iliopsoas muscle (Figure 2).