neurofibroma in Hoffa’s fat pad

Intra-articular

neurofibroma of the knee: an unusual location in Hoffa’s fat pad. Lateral radiograph of the right knee reveals a density within Hoffa’s fat pad (arrow).

Intra-articular

neurofibroma of the knee: an unusual location in Hoffa’s fat pad. Ultrasonography of the right knee shows a hypoechoic mass within Hoffa’s fat pad (arrow).

Intra-articular

neurofibroma of the knee: an unusual location in Hoffa’s fat pad. MRI of the knee shows a nodular lesion of Hoffa’s fat pad (arrows) with an isosignal on T1-weighted (a) and moderate high signal on proton density fat suppressed images (b).

Intra-articular

neurofibroma of the knee: an unusual location in Hoffa’s fat pad. MRI of the right knee shows bright enhancement on post-gadolinium injection of the lesion in Hoffa’s fat pad (arrow).

Intra-articular

neurofibroma of the knee: an unusual location in Hoffa’s fat pad. MRI of the knee reveals a cutaneous neurofibroma at the popliteal fossa (arrows) with an isosignal on T1-weighted (a), a moderate high signal on PDFS images (b), and a bright enhancement on post-injection (c).