病理学-肠炎PPT课件
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滤泡形成。 粘膜下层淋巴管高度扩张,有严重的淋巴水肿 50%-70%病例肠壁有结核样肉芽肿形成
可见类上皮细胞和多核巨细胞,但无干酪样坏死
.
7
Crohn病并发症瘘管。左边可见裂缝从黏膜延伸到黏膜下层、肌层,最终形成瘘管。 瘘管可在肠袢间、膀胱和皮肤形成。累及结肠的直肠周瘘管常见。
One complication of Crohn's disease is fistula formation. Seen here is a fissure extending through mucosa at the left into the submucosa toward the muscular wall,
Crohn病炎性肉芽肿,有上皮样细胞、巨细胞和许多淋巴细胞。微生物特殊染色阴性。 At high magnification the granulomatous nature of the inflammation of Crohn's disease is demonstrated here with ep.ithelioid cells, giant cells, and many 11 lymphocytes. Special stains for organisms are negative.
Hale Waihona Puke Baidu
(四)临床表现 1、腹痛、腹泻、腹部肿块、肠穿孔、肠瘘 形成等。
2、肠外免疫性疾病,如游走性多关节炎、 强直性脊柱炎等。
.
12
二、慢性溃疡性结肠炎
(一)定义:是一种病因不明的慢性结肠炎症。 (二)常见人群:30岁以上 (三)好发部位:结肠各段 (四)发病机制:多认为是自身免疫性疾病
.
13
(五)病理变化
intestine. Here, the mucosal surface demon. strates an irregular nodular
5
appearance with hyperemia and focal superficial ulceration.
光镜下: 裂隙状溃疡,表面被覆坏死组织 穿壁性炎症:肠壁全层慢性炎症,有淋巴
显微镜下Crohn病的特点是穿壁性炎症。炎细胞(兰色浸润)从黏膜层到黏膜下 层、肌层均有浸润,在浆膜表面苍白的肉芽肿中心出现结节性浸润。
Microscopically, Crohn's disease is characterized by transmural inflammation. Here, inflammatory cells (the bluish infiltrates) extend from mucosa through submucosa and muscularis and appear .as nodular infiltrates on the serosal 10 surface with pale granulomatous centers.
.
16
光镜下:
炎症主要累及粘膜、粘膜下层,一般不波及肌层、外膜 (中性粒C、淋巴C、浆C及嗜酸性粒C浸润) 多个隐窝小脓肿形成 溃疡形成,溃疡底部血管壁纤维素样坏死 溃疡边缘肠粘膜上皮可见不典型增生→易癌变 晚期病变区肠壁有大量纤维组织增生
.
17
溃疡性结肠炎典型的组织学表现是粘膜隐窝小脓肿。不幸的是,并不是所有的 炎症性肠病都能精确归类。
completely in all patients.
显微镜,溃疡性结肠炎最初限制在黏膜,溃疡破坏局部粘膜同时逐渐破坏周围粘膜。 Microscopically, the inflammation of ulcerative colitis is confined primarily to the mucosa. Here, the mucosa is eroded b.y an ulcer that undermines surrounding20
Crypt abscesses are a histologic findin. g more typical with ulcerative colitis. 19 Unfortunately, not all cases of inflammatory bowel disease can be classified
第三节 非特异性肠炎
.
1
❖ 局限性肠炎 ❖ 慢性溃疡性结肠炎
.
2
一、局限性肠炎(Crohn病)
又称克罗恩病、克隆氏病
(一)定义:是一种病因未明的主要侵犯消化道 的全身性疾病。
(二)常见人群:20-30岁青年 (三)好发部位:回肠末端>结肠>回肠近端>空肠等 (四)病因、发病机制:免疫、遗传、感染有关
which eventually will form a fistula. Fistula. e can form between loops of bowel, 9 bladder, and skin. With colonic involvement, perirectal fistulae are common.
肉眼观: 粘膜隐窝多发性小脓肿→
不断扩大、相互沟通、融合→破溃→ 坏死粘膜脱落→表浅小溃疡→大片溃疡
(多发、大而不规则) 残存肠粘膜充血、水肿、增生形成假息肉
.
14
假息肉清晰可见发红炎性的岛屿状粘膜。假息肉间仅存肌层。
At higher magnification, the pseudopolyps. can be seen clearly as raised red island1s5 of inflamed mucosa. Between the pseudopolyps is only remaining muscularis.
.
3
(五)病理变化 肉眼观:
病灶呈节段性分布 病变处粘膜高度水肿增厚呈卵石状 粘膜面有裂隙状溃疡(深、长)→穿孔、肠瘘 病变肠壁因纤维化而增厚、变硬、肠腔狭窄 可与邻近肠管发生粘连
.
4
Crohn病发生在小肠。黏膜表面有不规则的充血结节和浅表溃疡灶。
This is another example of Crohn's disease involving the small
可见类上皮细胞和多核巨细胞,但无干酪样坏死
.
7
Crohn病并发症瘘管。左边可见裂缝从黏膜延伸到黏膜下层、肌层,最终形成瘘管。 瘘管可在肠袢间、膀胱和皮肤形成。累及结肠的直肠周瘘管常见。
One complication of Crohn's disease is fistula formation. Seen here is a fissure extending through mucosa at the left into the submucosa toward the muscular wall,
Crohn病炎性肉芽肿,有上皮样细胞、巨细胞和许多淋巴细胞。微生物特殊染色阴性。 At high magnification the granulomatous nature of the inflammation of Crohn's disease is demonstrated here with ep.ithelioid cells, giant cells, and many 11 lymphocytes. Special stains for organisms are negative.
Hale Waihona Puke Baidu
(四)临床表现 1、腹痛、腹泻、腹部肿块、肠穿孔、肠瘘 形成等。
2、肠外免疫性疾病,如游走性多关节炎、 强直性脊柱炎等。
.
12
二、慢性溃疡性结肠炎
(一)定义:是一种病因不明的慢性结肠炎症。 (二)常见人群:30岁以上 (三)好发部位:结肠各段 (四)发病机制:多认为是自身免疫性疾病
.
13
(五)病理变化
intestine. Here, the mucosal surface demon. strates an irregular nodular
5
appearance with hyperemia and focal superficial ulceration.
光镜下: 裂隙状溃疡,表面被覆坏死组织 穿壁性炎症:肠壁全层慢性炎症,有淋巴
显微镜下Crohn病的特点是穿壁性炎症。炎细胞(兰色浸润)从黏膜层到黏膜下 层、肌层均有浸润,在浆膜表面苍白的肉芽肿中心出现结节性浸润。
Microscopically, Crohn's disease is characterized by transmural inflammation. Here, inflammatory cells (the bluish infiltrates) extend from mucosa through submucosa and muscularis and appear .as nodular infiltrates on the serosal 10 surface with pale granulomatous centers.
.
16
光镜下:
炎症主要累及粘膜、粘膜下层,一般不波及肌层、外膜 (中性粒C、淋巴C、浆C及嗜酸性粒C浸润) 多个隐窝小脓肿形成 溃疡形成,溃疡底部血管壁纤维素样坏死 溃疡边缘肠粘膜上皮可见不典型增生→易癌变 晚期病变区肠壁有大量纤维组织增生
.
17
溃疡性结肠炎典型的组织学表现是粘膜隐窝小脓肿。不幸的是,并不是所有的 炎症性肠病都能精确归类。
completely in all patients.
显微镜,溃疡性结肠炎最初限制在黏膜,溃疡破坏局部粘膜同时逐渐破坏周围粘膜。 Microscopically, the inflammation of ulcerative colitis is confined primarily to the mucosa. Here, the mucosa is eroded b.y an ulcer that undermines surrounding20
Crypt abscesses are a histologic findin. g more typical with ulcerative colitis. 19 Unfortunately, not all cases of inflammatory bowel disease can be classified
第三节 非特异性肠炎
.
1
❖ 局限性肠炎 ❖ 慢性溃疡性结肠炎
.
2
一、局限性肠炎(Crohn病)
又称克罗恩病、克隆氏病
(一)定义:是一种病因未明的主要侵犯消化道 的全身性疾病。
(二)常见人群:20-30岁青年 (三)好发部位:回肠末端>结肠>回肠近端>空肠等 (四)病因、发病机制:免疫、遗传、感染有关
which eventually will form a fistula. Fistula. e can form between loops of bowel, 9 bladder, and skin. With colonic involvement, perirectal fistulae are common.
肉眼观: 粘膜隐窝多发性小脓肿→
不断扩大、相互沟通、融合→破溃→ 坏死粘膜脱落→表浅小溃疡→大片溃疡
(多发、大而不规则) 残存肠粘膜充血、水肿、增生形成假息肉
.
14
假息肉清晰可见发红炎性的岛屿状粘膜。假息肉间仅存肌层。
At higher magnification, the pseudopolyps. can be seen clearly as raised red island1s5 of inflamed mucosa. Between the pseudopolyps is only remaining muscularis.
.
3
(五)病理变化 肉眼观:
病灶呈节段性分布 病变处粘膜高度水肿增厚呈卵石状 粘膜面有裂隙状溃疡(深、长)→穿孔、肠瘘 病变肠壁因纤维化而增厚、变硬、肠腔狭窄 可与邻近肠管发生粘连
.
4
Crohn病发生在小肠。黏膜表面有不规则的充血结节和浅表溃疡灶。
This is another example of Crohn's disease involving the small