Endometrial polyps are common pathologic findings in gynecologic pathology practice. Although malignant changes in these lesions are uncommon, numerous studies confirmed this association especially with endometrial serous and clear cell carcinoma. Two cases of malignant endometrial polyps in association with presumed precursor lesion in one of them are presented.

緒言:淡 明細胞肉腫は四肢軟部組織に好発す るまれな悪性腫瘍で,本 邦での報告は32例 にすぎ ない.心 転移は少な く,心 内腔への腫瘤形成の報 告はない.我 々は,右 膝関節部に原発し,心 内腔 に巨大な転移性腫瘤を形成した淡明細胞肉腫の1 例を経験 したので報告す る.症 例:25才,男 性. 主訴:呼 吸困難.家 族歴:特 になし.既往歴: 9才 の時,漿 液性髄膜炎.現 病歴:昭 和55年 頃, 右膝部腫瘤に気づいたが放置.そ の後,腫 瘤が徐々 に増大し,昭 和57年1月,当 院整形外科を受診 淡明 細胞肉腫 と診断 され:右大腿部切断術 を受け た.な お,術 前検査時に,大 動脈弁閉鎖不全を指 摘 された.術 後,化 学療法を受け退院.昭 和59年 9月 呼吸困難・シ ョックとなり,緊 急入院.心 タ ンポナーデの診断で,心 膜開窓術を受けた.心 膜 液の細胞診によ ...

BACKGROUND Clear cell sarcoma of the kidney (CCSK) in adults is extremely rare. Optimal treatment of adult patients with CCSK remains unclear. CASE PRESENTATION A 22-year-old man presented with a 2-month history of left flank pain. A color duplex sonography revealed a hypervascular, heterogeneous renal mass. Abdominal and pelvic computerized tomography showed a heterogeneous mass originating ...

Clear cell sarcoma is a rare malignant tumor representing about 1% of soft tissue tumors. It usually presents in the distal extremities of young adults, frequently attached to tendons or aponeuroses. This slowly progressive tumor tends to recur and results in eventual development of metastatic growth. Early recognition of the disease and prompt wide excision of tumor are essential to get a favo...

We report a case of primary clear cell sarcoma occurring in the humerus. A 20 year old girl was referred to our hospital two years ago with painless swelling of the soft tissue surrounding the proximal right humerus. The conventional radiographic image showed an ill-defined, aggressive, osteolytic lesion associated with a partial cortical defect of the proximal right humerus. Magnetic resonance...

We report the case of a 67-year-old female with clear cell sarcoma (CCS) of the vulva. Grossly, the tumor was a partly exophytical vulvar mass, measuring 20 x 15 cm. At the time of presentation, the patient showed metastases to the lung, inguinal and pelvic lymph nodes. Histologically, the tumor consisted of oval or spindle cells with only mild nuclear pleomorphism and rare mitoses (up to 2/10 ...

BACKGROUND Use of molecular assays is gradually becoming a mandatory part of the clinical management of soft tissue tumors, however the choice and the interpretation of these tests may present a challenge. SUMMARY This report demonstrates an unusual presentation of sarcoma, which was initially diagnosed as a tumor of unknown primary site. Given the presence of vimentin, Fli-1, CD99 and S100 m...

Clear cell sarcoma (CCS) is a rare, distinctive soft tissue neoplasm, typically occurring in the distal extremities of young adult patients. Although CCS shows melanocytic differentiation, it is now clear that it is clinicopathologically and genetically distinct from conventional malignant melanoma. The 'osteoclast-rich tumour of the gastrointestinal tract with features resembling clear cell sa...

  Chloroma or granulocytic sarcoma (GS) is a malignant neoplasm of myeloid lineage that occur in a variety of anatomic sites other than the bone marrow including soft tissue, bone, lymph node, nasal fossa, skin and sometime in the orbit. In the subconjunctiva it is rarely reported. A 4-year-old girl with a history of treated acute myelogenous leukemia was referred to Farabi Eye Hospital, Tehra...