[病理學(xué)]診斷肉瘤的主要形態(tài)依據(jù):

原題:
[病理學(xué)]診斷肉瘤的主要形態(tài)依據(jù):
選項:
A.包膜消失
B.浸潤生長
C.瘤細胞異型性明顯
D.瘤細胞彌漫分布與間質(zhì)分界不清
E.血行轉(zhuǎn)移

答案:
D
解析:
 

答復(fù):本題選D。

                                             癌                                                                                           肉瘤

組織來源                         上皮組織                                                                                  間葉組織

發(fā)生率                        常見,80%左右                                                                       較少見,20%左右

年齡                                中年以上                                                                                青少年多見

部位                       皮膚、粘膜、內(nèi)臟多見                                                                   四肢、軀干多見

大體形態(tài)            灰白色,細顆粒狀,干燥,質(zhì)較硬                                          粉紅色,細膩,魚肉狀,質(zhì)較軟

組織學(xué)特點  癌細胞成卵巢狀、腺管狀、索狀排列。實質(zhì)與間質(zhì)分界清楚              瘤細胞彌漫排列,與間質(zhì)混雜

網(wǎng)狀纖維                  癌細胞間無網(wǎng)狀纖維                                                                 瘤細胞之間有網(wǎng)狀纖維

轉(zhuǎn)移方式                        淋巴道為主                                                                                  血道為主

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