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Intranodal palisaded myofibroblastoma (IPM) is a benign mesenchymal neoplasm originating from smooth muscle cells and myofibroblasts. It is characterized with spindle cells, amianthoid fibers, and proliferation of hemosiderin containing histiocytes in the lymph node. The nodular lesion determined in the inguinal region of a 80-year-old male patient was excised. Macroscopic examination of the section of the lesion demonstrated a solid appearance with hemorrhagic areas. Microscopic examination revealed spindle cell proliferation, amianthoid fibers, hemosiderin pigment, and extravasated erythrocytes. Nuclei of the spindle cells displayed a palisaded patchy appearance. Compressed lymphoid tissue was observed around the lesion. By trichrome (Masson) reaction, spindle cells showed staining in smooth cells, whereas collagen staining was observed in homogeneous eosinophilic accumulations. In neoplastic cells, positive reaction was determined with vimentin and SMA. Ki67 index was determined to be below 1%. In light of those results, the case was diagnosed as "intranodal palisaded myofibroblastoma". IPM is a considerably uncommon neoplasm originating from stromal component of a lymph node. Although IPM shows a benign biological behavior, it bears importance because it is frequently confused with metastatic lesions.

社会公益组织，一般是指那些非政府的、不把利润最大化当作首要目标，且以社会公益事业为主要追求目标的社会组织。早先的公益组织主要从事人道主义救援和贫 民救济活动，很多公益组织起源于慈善机构。西方一些学者把公益组织统归于非政府组织，我国一些学者则把它称作第三部门或非营利机构，以区别于政府组织和企 业组织等。 关于社会公益组织的概念，目前还没有一致的、普遍认可的定义。较为普遍的看法是，社会公益组织是一种合法的、非政府的、非营利的、非党派性质的、非成员组 织的、实行自主管理的民间志愿性的社会中介组织，其主要活动是致力于社会公益事业和解决各种社会性问题。(维客百科) >> - NPO，非营利组织或非牟利机构（Non-Profit Organization，NPO）是指不是以营利为目的的组织，它的目标通常是支持或处理个人关心或者公众关注的议题或事件。非营利组织所涉及的领域非 常广，从艺术、慈善、教育、政治、宗教、学术、环保等等。非营利组织的运作并不是为了产生利益，这一点通常被视为这类组织的主要特性。然而，某些专家认为 将非营利组织和企业区分开来的最主要差异是：非营利组织受到法律或道德约束，不能将盈余分配给拥有者或股东。因此，今日社会中，非营利组织有时亦称为第三 部门（the third sector），与政府部门（第一部门）和企业界的私部门（第二部门），形成三种影响社会的主要力量。(MBA智库百科) >>