Personal history of NF1. Evaluate left flank plexiform neurofibroma and compare it to previous, also intra pelvic tumors. BONE MARROW: No fractures. Bone marrow signal is within normal limits.SOFT TISSUES: Again seen is a heterogeneously enhancing soft tissue mass in the left lower back centered just above the iliac crest (series 1301, image 41) unchanged in size measuring approximately 6.2 x 11.0 x 4.5 cm (AP x TV x CC) previously measured 6.5 x 11.1 x 4.5 cm. The mass remains somewhat heterogeneous and demonstrates increased T2 signal and decreased T1 signal compared to the adjacent fat. The deep margin of the lesion is indistinct and blends with the underlying fat. The lesion appears separate from the adjacent deep paraspinal and gluteal muscles; the intervening fat planes appear intact. Additional numerous round targetoid T2 hyperintense lesions are present throughout the soft tissues of the abdomen, pelvis and bilateral lower extremities compatible with neurofibromas. An example lesion in the anterior musculature of the right thigh (series 1301, image 13) measures approximately 1.4 x 1.8 cm, (previously 1.3 x 1.8 cm).JOINTS: No significant abnormality noted.ADDITIONAL
1.No change in size of soft tissue mass centered in the left lower back immediately superior to the left iliac crest measuring 6.2 x 11.0 x 4.5 cm 2.Additional smaller neurofibromas scattered throughout the soft tissues of the abdomen, pelvis and bilateral lower extremities appear similar.