Reason: 2 years s/p resection of MPNST of left posterior thigh, hx of NF1, evaluate for recurrence History: above Again seen are postsurgical changes of prior resection of the patient's reference mass within the posterior compartment of the left thigh. There are multiple foci of metallic susceptibility artifact which are likely postsurgical in etiology. Again seen are multiple subcentimeter foci of enhancement within the subcutaneous tissue along the posterior aspect of the thigh which appear similar to the prior study and may reflect postsurgical granulation tissue. No new foci of enhancement are identified.The reference lobulated heterogeneous mass interposed between the semimembranosus and long head of the biceps femoris along the distal aspect of the femoral metaphysis at the bifurcation of the tibial and peroneal nerve, measures 2.8 x 1.7 cm, previously 2.5 x 1.8 cm (image 71; series 11) consistent with the patient's known history of neurofibromas. The reference cutaneous mass along the medial aspect of the knee measures 4.0 x 1.8 cm, previously 4.0 x 1.7 cm (image 73; series 11), not significantly changed. Multiple additional foci of signal abnormality along the course of the sciatic nerve and cutaneous nodules are also consistent with the patient's known history of neurofibromatosis.
Findings consistent with patient's history of neurofibromatosis. Surgical changes of prior resection of the patient's known left thigh mass. No significant interval change in multiple nonspecific punctate foci of enhancement within the subcutaneous tissues along the posterior aspect of the thigh which likely represent granulation tissue from prior surgery. Otherwise no findings to suggest residual or recurrent tumor.