PHILIPS每日一例:慢性胆囊炎并胆囊结石CT病例图片影像诊断分析

2022-08-20 放射沙龙 放射沙龙

慢性胆囊炎并胆囊结石CT病例图片影像诊断分析

【病史临床】女性,43岁。右小腿外伤入院。入院查腹部B超示:胆囊内见4.1x2.9cm低淡光团,边界不清,未排实性占位。【影像图片】




【CT表现】胆囊内混杂高密度影,内有不规则形钙化,胆囊壁略增厚。

【结果】手术:胆囊4x8cm大小,胆囊内未见占位性病变,壁不厚,有泥沙样结石。行“胆囊切除术”。病理:为慢性胆囊炎。

【点评】胆结石是一种常见病,多见于中年女性,病因多与家族史、油腻饮食、血脂增高、饮酒等因素有关,分为胆色素型、胆固醇型和混合型。临床上表现为胆绞痛和阻塞性黄疸,伴有胆囊炎者可有胆囊炎的症状体征。

声像图示胆囊腔内一个或多个强回声光团、光斑、或弧形强光带,后方伴有清晰的声影,可随体位改变而移动;典型声像图表现为“囊壁、结石、声影”三合征;充满型结石表现为胆囊无回声消失,前半部呈弧形强光带,后方伴声影;泥沙样结石则为囊内细小的强回声光点群,后伴声影;胆囊壁间结石则为壁内强回声光斑,后方伴彗星尾征或声影,体位改变时不移动。

CT表现因结石化学成分不同,可为高密度、等密度、低密度、环状结石。等、低密度结石CT不易发现,胆影葡胺增强检查见胆囊内可移动的充盈缺损可明确。

典型的超声及CT表现,胆结石诊断不难,需与胆囊息肉、胆汁浓缩及胆囊癌相鉴别。胆囊息肉呈高回声结节,后不伴声影,不随体位改变而移动;胆汁浓缩示胆囊内回声增强、密度增高,但后方不伴声影;胆囊癌呈实性结节,突向囊腔,增强后强化及向周边侵犯可鉴别。

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    2021-11-10 chengjn
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