摘要
A NF1 (neurofibromatosis 1) patient developed multiple necrotic lung metastases</span><span style="font-family:Verdana;"> from a sciatic malignant peripheral nerve sheath tumor (MPNST) invading the superficial femoral artery. The first diagnosis was metastases of a non-small-cell adenocarcinoma because the right calf MPNST was not clinical</span><span style="font-family:Verdana;">ly noticeable ant that the chest/abdomen PET/CT did not include the region of the legs. When the MPNST was diagnosed, new histological analysis on the </span><span style="font-family:Verdana;">metastases changed the diagnosis to that of epithelioid undifferentiated sarcoma.</span><span style="font-family:Verdana;"> The article deals with the sometimes-delayed diagnosis in those NF1 patients </span><span style="font-family:Verdana;">with large palpable masses and chronic pain pre-existing the malignant transformat</span><span style="font-family:Verdana;">ion, and discusses the difficulty of the biopsy of necrotic metastases.
A NF1 (neurofibromatosis 1) patient developed multiple necrotic lung metastases</span><span style="font-family:Verdana;"> from a sciatic malignant peripheral nerve sheath tumor (MPNST) invading the superficial femoral artery. The first diagnosis was metastases of a non-small-cell adenocarcinoma because the right calf MPNST was not clinical</span><span style="font-family:Verdana;">ly noticeable ant that the chest/abdomen PET/CT did not include the region of the legs. When the MPNST was diagnosed, new histological analysis on the </span><span style="font-family:Verdana;">metastases changed the diagnosis to that of epithelioid undifferentiated sarcoma.</span><span style="font-family:Verdana;"> The article deals with the sometimes-delayed diagnosis in those NF1 patients </span><span style="font-family:Verdana;">with large palpable masses and chronic pain pre-existing the malignant transformat</span><span style="font-family:Verdana;">ion, and discusses the difficulty of the biopsy of necrotic metastases.
