case_images: PMC10860526_01
case_images: (A-E) Initial contrast-enhanced MRI performed 2 years prior at a previous hospital. A sagittal T2WI (A) showing a 6 cm mass located in the myometrium with a well-defined rim of low signal intensity (yellow arrowheads), consisting of three components: a homogeneous solid structure with mild hyperintensity (white asterisk), a cystic component (black asterisk), and a low-signal-intensity component similar to that of the muscle (yellow asterisk), along with a banded structure of low signal intensity (white arrowhead). An axial T2WI (B) showing a mass exhibiting a homogeneous solid component with mild hyperintensity (white asterisk) and a cystic component (black asterisk), accompanied by a low-signal-intensity rim surrounding the mass. The homogeneous solid component within the mass shows a high signal intensity on DWI (C), a low signal intensity on ADC map (D) with the ADC value of 1.08 x 10-3 mm2/s, and a slightly stronger enhancement than the myometrium on contrast-enhanced fat-suppressed T1WI (E).
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case_images: T2WI (Figure 1A). The mass consisted of three different components: the first component was a homogeneous solid structure which showed a mild hyperintensity on T2WI and diffusion-weighted images (DWI) with a low apparent diffusion coefficient (ADC) value, which was enhanced slightly stronger than the myometrium on fat-suppressed T1-weighted images (T1WI); the second component was a cystic structure without haemorrhage; the third component showed a low signal intensity on T2WI, and a part of it showed a banded structure (Figure 1).
case_images: (A-C) The second contrast-enhanced MRI performed at the visit to our hospital. A sagittal T2WI (A) shows the mass enlarged to 9 cm compared to the initial MRI 2 years prior. In a sagittal T2WI (A), the homogeneous solid component with mild hyperintensity (white asterisk) and cystic component (black asterisk) are increased, the low-signal-intensity component similar to the muscle (yellow asterisk) is stretched, and the low signal intensity banded structure (white arrow) is not significantly changed compared to the initial MRI. The solid component with a moderately high signal intensity on T2WI (B) demonstrates a high signal intensity on fat-suppressed T1WI (C), suggesting of haemorrhage.
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case_images: A second contrast-enhanced MRI performed at our hospital showed that the mass had enlarged to 9 cm (Figure 2). Moreover, the fat-suppressed T1WI demonstrated a high signal intensity within the homogeneous solid component, suggesting of haemorrhage (Figure 2).