脾臓の硬化血管結節変換（SANT）：CTとMRIに関する症例報告

脾臓の固形腫瘍はまれであり、すべての手術および剖検標本で0.007％の発生率があります。微視的な構造と機能の観点から、脾臓は2つの部分で構成されています：免疫系で重要な役割を果たす白いパルプと血液をろ過する赤いパルプ。白い歯髄、および赤血球から生じる血管新生物。血管元素から生じる高層腫瘍には、血管腫、リンパ管腫、ハマルトーマなどの良性病変、血管内膜腫、血管エンジオ腫、麻痺性血管腫などの中間病変も含まれます。通常、術前のイメージング研究と細かい吸引（FNA）による悪性病変と悪性病変を区別することは困難です。脾臓腫瘍。マルテルとすべて初めて、脾臓の血管病変のように、硬化性血管腫様結節形質転換（SANT）を説明し、良性の臨床経過は、非腫瘍性筋胞子増殖プロセスに閉じ込められた赤パルプ組織の変化によって構成されます。私たちは、FDG/PET-CT（曖昧と呼ばれる）、CT、およびMRIで記録された良性脾臓腫瘤のまれな症例について説明しています。

Solid tumors of the spleen are rare, with an incidence of 0.007% in all operating and autopsy specimens. In terms of microscopic structure and function, the spleen consists of two parts: the white pulp, which plays an important role in the immune system and the red pulp, which filters the blood.Primary splenic neoplasms can be classified into lymphoid neoplasms arising from the white pulp, and vascular neoplasms which arise from the red pulp.Primary tumors arising from vascular elements include benign lesions such as hemangioma, lymphangioma and hamartoma, intermediate lesions such as hemangioendothelioma, hemangiopericytoma and littoral cell angioma as well as the frankly malignant hemangiosarcoma.It is usually difficult to distinguish a benign from a malignant lesion with preoperative imaging studies and cytological exam by fine-needle aspiration (FNA), that is not easily obtained because of the risk of bleeding.Therefore a splenectomy should be necessary for a definitive diagnosis of splenic tumors.Martel and all for the first time described the sclerosing angiomatoid nodular transformation (SANT), like a vascular lesion of the spleen, with benign clinical course consisting by altered red pulp tissue that has been entrapped by a non-neoplastic stromal proliferative process.We describe a rare case of benign splenic mass documented with FDG/PET-CT (referred as equivocal), CT and MRI.