case_images: PMC9521361_01
case_images: Ultrasonography images of the medial right knee (14MHz transducer). The sonographic characteristics of these findings are well-defined oval structures with an anechogenic appearance and capsule (arrows). There was no angiogenesis present or oedema around the structures. Some through transmission is present on the left-hand image.
case_images: JRMCC-5-2237-g001.jpg
case_images: PMC9521361_01_JRMCC-5-2237-g001.jpg
case_images: F0001
case_images: In the subcutaneous tissue, medially and laterally, anechogenic structures with a sharp, well-defined edge (Fig. 1) were observed with an associated posterior enhancement. A probable diagnosis of post-traumatic fat necrosis with consequent development of nodular cystic fat necrosis was seen (Fig. 1).
case_images: Magnetic resonance imaging T2 TSE fat suppression transverse sequence of the right knee with nodular cystic fat necrosis (arrows).
case_images: JRMCC-5-2237-g002.jpg
case_images: PMC9521361_01_JRMCC-5-2237-g002.jpg
case_images: F0002
case_images: An additional magnetic resonance imaging (MRI) scan was performed, confirming the visualized cysts (Fig. 2).