TY - JOUR T1 - Images Combined With Surgical Procedures and Pathological Identification to Distinguish a Reactive Histiocytosis With Organized Hematoma From a Malignant Peripheral Nerve Sheath Tumor JF - In Vivo JO - In Vivo SP - 1365 LP - 1372 DO - 10.21873/invivo.13218 VL - 37 IS - 3 AU - CHUN-JEN CHANG AU - CHUN-CHUNG CHEN AU - DER-YANG CHO AU - DA-TIAN BAU AU - CHAO-HSUAN CHEN Y1 - 2023/05/01 UR - http://iv.iiarjournals.org/content/37/3/1365.abstract N2 - Background/Aim: Malignant peripheral nerve sheath tumors (MPNST) are rare soft tissue malignant tumors. To the best of our knowledge, there have been no previous reports of benign reactive histiocytosis with hematoma that mimics MPNST on medical images. Case Report: A 57-year-old female with past history of hypertension came to our clinic due to low back pain with radiculopathy which was diagnosed with a tumor arising from L2 neuroforamen with L2 pedical erosion. Initial tentative diagnosis on the images was MPNST. However, after surgical resection, the pathologic report revealed no evidence of malignancy but only an organized hematoma with reactive histiocytosis. Conclusion: Images cannot provide enough diagnostic evidence for distinguishing a reactive histiocytosis from MPNST. Proper surgical procedures and expert pathological identification can correct the mistaking of the ambiguous identification as MPNST. Images can only provide precise and personalized medication accompanied by proper surgical procedures and expert pathological identification. ER -