Cushing综合症

1、Cushing syndromeCushing 综合症Definition Cushing syndrome, the constellation of clinical signs and symptoms resulting form chronic glucocorticoid excess, was probably first described in 1899 定 义为各种病因造成肾上腺分泌过多的糖皮质激素（主要是皮质醇）所致病症的总称主要临床表现为满月脸，多血质外貌，向心性肥胖、痤疮、皮肤紫纹高血压和骨质疏松等Aetiology Clinical presentationlabo

2、ratory examination Diagnosis and differential diagnosisTreatment ( principle) Prognosis 病因分类临床表现实验室检查诊断及鉴别诊断治疗(原则)预后Aetiology病因分类Hypothalamus 下丘脑（CRH）pituitary gland 垂体（ACTH）adrenal cortex肾上腺皮质zona glomerulosa zona fasciculata zona reticularis（Aldosterone）（cortisol）（gonadal hormone）+-AetiologyACTH-d

3、ependent Cushing syndromeCushing diseaseEctopic ACTH syndrome ACTH- independent Cushing syndrome Adrenocortical adenomaAdrenocortical adenocarcinomaMicronodular adrenal diseaseMassive macronodular adrenal disease病因分类 依赖ACTH 的cushing综合症 cushing 病异位ACTH综合症非依赖ACTH 的cushing综合症肾上腺皮质腺瘤 肾上腺皮质癌 原发性色素结节性肾上腺病

4、大结节性巨大肾上腺病Clinical feature各型临床特征Cushing DiseaseIt is the most common type of Cushing syndrome, and accounts for about 70% of the syndromePathogenesisMost patients have ACTH-secreting anterior pituitary corticortrope microadenomas(10mm in diameter), but a small number have diffuse corticotrope hyperp

5、lasia and pituitary macroadenomaCushing病最常见，约占cushing综合症的70%,多见于成人，女性多于男性，是由于垂体分泌过多的ACTH所致病因垂体微腺瘤80%垂体大腺瘤10：压迫、侵袭等症状下丘脑功能紊乱Ectopic ACTH syndromeThe majority of patients with ectopic ACTH syndrome have outside pituitary tumor Other sites are pulmonary carcinosis, carcinoid of bronchus, thymic carcino

6、ma pancreatic cancer, chromaffin tumor, medullary carcinoma of thyroid and so on 异位ACTH综合症继发于垂体以外的恶性肿瘤小细胞肺癌、支气管类癌、胸腺癌、胰腺癌、嗜铬细胞瘤、神经母细胞瘤 等等临床上分两型缓慢进展型迅速进展型Adrenocortical adenomaPatients with adrenal adenoma usually have gradual onset of sign of hypercortisolism, accounts for about 15-20% of the syndro

7、meAdenoma is round or ellipse, diameter is 3-4cm, weight is about 40g肾上腺皮质腺瘤多见于成人，男性多于女性 15%-20%腺瘤呈圆形或椭圆形，直径约3-4cm，重40g左右，包膜完整其病缓慢，病情中等，多毛及雄激素增多少见Adrenocortical adenocarcinomaIt occurs in lower than 5% patients of cushing syndromePatients with adenocarcinoma tend to have a more acute and progressive

8、 course and virilizing effects may predominateThe bulk of tumor is larger肾上腺皮质腺癌占cushing综合症的5以下瘤体积大（直径5-6cm)，肿瘤可浸润包膜病情重，进展快，重度cushing综合症的表现(低钾性碱中毒、女性男性化） Micronodular adrenal diseaseThe disease is also known as Meadors syndrome About half of patients with this disorder have no distinctive clinical p

9、resentation other than being young-always younger than 30 years of age, half younger than 15 years and some infants原发性色素结节性肾上腺病此病又称这为Meador综合症或原发性色素 性结节性肾上腺疾病患者多为儿童和青少年临床表现：一部分同一般的临床表现 一部分为家族性，呈显性遗传 (Carney综合症）Massive macronodular adrenal disease大结节性巨大肾上腺病Clinical presentation临床表现典型病例重型cushing综合症早期病

10、例以并发症为主者周期性或间歇性 Typical cases典 型 病 例Clinical presentation1Progressive obesity is the most common sign. It is usually central, involving the face, neck trunk and abdomenAll over the body and nervous system: weakness, change of emotion and so onThe skin is atrophic, the stratum corneum is thinned, and

11、 there is loss of subcutaneous fat allowing subcutaneous blood vessels to been seenClinical presentation2Cardiovascular complication is a major cause of morbidity and death in untreated Cushing syndrome Moderate hypertension is commonGlucocorticoid suppress immune functionInflammatory and febrile re

12、sponses to bacterial infection are suppressedDysbolism and sexual disturbance sometimes occur临床表现1满月脸、多血质外貌、向心性肥胖临床表现2全身和神经系统症状：肌无力，常有不同程度的精神、情绪变化皮肤表现：皮肤薄，微血管脆性增加，易出现淤斑、紫纹, 易合并真菌感染,有时可出现皮肤色素沉着临床表现2心血管表现：高血压心衰、脑血管意外凝血功能异常(血小板，纤维蛋白原 ），脂代谢紊乱，动静脉血栓对感染的抵抗力减弱使达到炎症病灶的单核细胞减少巨噬细胞对抗原的固定、吞噬和杀伤力减弱中性粒细胞运动能力，吞噬作用

13、减弱抗体的形成受到阻抑临床表现3性功能障碍：月经减少、不规则、停经、痤疮等明显男性化（警惕肾上腺癌）代谢障碍：脂、蛋白、糖代谢低钾性碱中毒 ，低钙 骨质疏松，伤口愈合不良，生长发育延迟重型cushing综合症多由癌肿所致，病情严重，进展迅速体重减轻高血压、浮肿、低钾性碱中毒早期病例全身情况较好以高血压为主肥胖、向心性的特点不够显著以并发症为主者Cushing综合症本身不明显多以并发症就诊：心衰、脑卒中病理性骨折、精神症状、肺部感染等等Laboratory examination实验室检查Laboratory examination The laboratory examination of C

14、ushing syndrome is cortisol hypersecretion.Increased urinary excretion of cortisol and urinary 17-OHLoss of rhythm of plasma cortisol, ACTHLoss of normal suppressibility of cortisol by low-dose dexamethasone 实验室检查 皮质醇分泌增多，失去昼夜分泌节律，且不能被小剂量地塞米松抑制试验所抑制尿17羟皮质类固醇、游离皮质醇增高血浆皮质醇浓度增高小剂量地塞米松抑制试验皮质醇分泌增多，失去昼夜节律

15、，不能被小剂量地塞米松抑制Diagnosis and Differential diagnosis诊断和鉴别诊断Diagnosis The clinical diagnosis of Cushings syndrome is confirmed by clinical presentation , cortisol hypersecretion, loss of normal rhythm in cortisol and loss of normal suppressibility of cortisol by low-dose dexamethasone诊 断临床表现皮质醇分泌增多，失去昼夜

16、分泌节律尿17-羟皮质醇和游离皮质醇增高 不能被小剂量地塞米松所抑制病 因 诊 断adenomaadenocarcinomaEctopic ACTH syndromecortisolAdrenal Differential diagnosis Cushings syndrome needs to identify with the following diseasesSimple obesity Type 2 diabetes Alcoholism and hepatic lesion Depressive disorder鉴别诊断2型糖尿病：临床表现、皮质醇节律正常单纯性肥胖：地米抑制试验、

17、皮质醇节律正常酗酒兼有肝损害者，出现假性cushing综合症 抑郁症：临床表现Treatment Treatment of Cushing syndrome is aimed at following goals:Cure of the syndrome by reduction of cortisol secretion to normalEradication of any tumor threatening the health of patientsPrevention of permanent dependency on medicationsAvoidance of permane

18、nt hormone deficiency Treatment-cushing diseaseTranssphenoidal microadenomectomy is the most rational current treatment for Cushing diseaseIn patients who are not cured by this treatment, three options remainReoperate on the pituitary glandRadiate the pituitary glandPerform surgical adrenalectomy an

19、d corticoid antagonist cushing病的治疗经蝶窦切除微腺瘤，是本病的首选方法一侧肾上腺全切，另一侧肾上腺全部或大部分切除，术后可能并发Nelson综合症开颅手术治疗，如不能全部切除，可在术后辅以放疗阻滞肾上腺皮质激素合成的药物Treatment-Adrenocortical adenomaand adenocarcinomaSmall adenomas can be removed by laparascopyLarge adenomas and carcinomas require an open flank or transabdominal approachTh

20、e cure with surgical removal of adrenal adenoma is virtually 100%肾上腺腺瘤、腺癌的治疗肾上腺腺瘤手术可获根治，术后采用氢化可的松替代腺癌应尽可能早作手术，如不能，采用药物治疗 Treatment- Ectopic ACTH syndromeWhen possible , the tumor should be surgically excised, removing the source of ectopic ACTH and thereby curing the metabolic disorderIn most patien

21、ts, however , the tumor is nonresectable at the time of diagnosis. Chemotherapy or radiation therapy, or both may be helpful异位ACTH综合症的治疗治疗原发性的恶性肿瘤手术、 放疗、化疗使用肾上腺皮质激素合成阻滞药Adrenal enzyme inhibitorsO, p-DDD AminoglutethimideSU4885Ketoconazole 肾上腺皮质激素合成阻滞药米托坦氨鲁米能美替拉酮 酮康唑手术前后的处理患者血浆皮质醇浓度很高，一旦切除相关肿瘤，皮质醇分泌量

22、锐减，有可能发生急性肾上腺皮质功能不全的危险手术前后均需补充糖皮质激素PrognosisCushing disease will be better after virtually treatmentThe prognosis with adrenal adenoma is excellent because surgery is usually curativeThe prognosis with adrenal carcinoma is poor because most patients have distant metastases at diagnosis预 后经过有效的治疗，病情好

23、转，症状减轻癌的预后取决于是否早期发现及能否完全切除肾上腺腺瘤的预后最好Cushing病疗效不一，应定期观察如需鉴别库欣综合征与单纯性肥胖，下列各项中最有意义的检验或试验是：A 血皮质醇测定B 24小时尿17-羟、17-酮C 24小时尿游离皮质醇D 小剂量地塞米松抑制试验E 大剂量地塞米松抑制试验 为确定库欣综合征的病变部位，下列各项中最有意义的检验或试验是： A 血皮质醇测定B 24小时尿17-羟、17-酮C 24小时尿游离皮质醇D 小剂量地塞米松抑制试验E 大剂量地塞米松抑制试验 为明确诊断哪项检查最为重要：A 再次OGTT试验B 血浆皮质醇测定C 血浆醛固酮测定D 血儿茶酚胺测定讨 论 题在 Cushing综合征的诊断过程中，行小剂量地塞米松抑制试验和大剂量地塞米松抑制试验的意义何在 69Thank you!病因分类 依赖ACTH 的cus