perivascular epithelioid cell tumor (pecoma) is a rare mesenchymal tumor composed of immunohistochemically and histologically distinctive perivascular epithelioid cells. here, we report on the computed tomography (ct) and magnetic resonance imaging (mri) findings of ovarian pecoma with pulmonary metastasis. the tumor was visible as a multilocular hemorrhagic mass that encased the ovarian vessel...

background: tumors involving the hand skeleton are rare. however, a basic knowledge of hand tumors is necessary for every clinician. this is due to the importance of distinguishing typical benign tumors from life or limb threatening malignant ones. methods: this study is a review of 99 cases of osseous hand tumors presented to the department of orthopedic surgery, imam khomeini hospital in tehr...

Among the more common neoplastic reactions observed in the mouse is the primary pulmonary tumor. It was first described in 1896. (References to specific papers before 1955 are to be found in the review by Shimkin [12]). Autopsies performed by Wells, Slye and Holmes on 147,132 mice uncovered pulmonary tumors in 2,865, or two per cent, of which 104 had metastasized. The mouse became a favorite ex...

BACKGROUND Pulmonary carcinoid tumors make up approximately one percent of all pulmonary tumors, and controversy exists regarding management and prognosis. We undertook a retrospective analysis of all patients who underwent surgical resection of pulmonary carcinoid tumors at our institution. METHODS From 1992 through 2014, 121 patients who underwent surgical resection of pulmonary carcinoid t...

The association between occupational asbestos exposure and the development of both pulmonary fibrosis or asbestosis and pulmonary carcinomas is well documented. It has been suggested that the two pathological conditions are associated with asbestos-related carcinomas developing from areas of asbestosis and not occurring when exposure has been too low to produce this type of pulmonary scarring. ...