腎上腺腫塊mr的特征及診斷(編輯修改稿)
2025-06-22 18:14 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 ppearance of myelolipoma. There is fat and a maturing marrow element on the right side and an otherwise normal adrenal cortex on the left. 五，囊性腫塊 腎上腺囊腫罕見，經(jīng)常是偶然發(fā)現(xiàn)或尸檢發(fā)現(xiàn)，尸檢發(fā)病率約%~% 。大部分情況下無癥狀，但是囊腫巨大時(shí)，可出現(xiàn)疼痛，并可觸及腫塊。囊腫出血，破裂或感染時(shí)出現(xiàn)急性癥狀。 1， 單純囊腫 內(nèi)皮囊腫是腎上腺囊腫最常見的亞型。占腎上腺囊腫約 40%。單純囊腫 T1WI低信號(hào) T2WI高信號(hào)，沒有軟組織成分，沒有強(qiáng)化。 Figure 7. (a, b) Coronal T1weighted inphase and T2weighted halfFourier RARE MR images show an oval, wellcircumscribed, right adrenal cyst (arrow in b) with a thin wall (arrowhead in b). The cyst has a typical appearance, showing low signal intensity at T1weighted imaging and high signal intensity at T2weighted imaging. Photomicrograph (original magnification, 100。 HE stain) shows a cystic lesion with a simple cuboidal mesothelial lining. 2，假性囊腫 假性囊腫是腎上腺囊性腫塊中第二多見。占腎上腺囊腫約 39% 。假性囊腫沒有上皮， MRI表現(xiàn)復(fù)雜，有分隔，血液成分和軟組織，可繼發(fā)出血和透明樣變，外周可有線樣鈣化，但 MRI難以顯示。 Figure 8. Axial T2weighted MR image obtained with inversion recovery shows a left adrenal pseudocyst. Note the softtissue ponent in the wall and the posteriorly located calcification (arrow). Photograph of the specimen shows a wellcircumscribed cystic mass with abundant gummous tan material pressing the nearby kidney (arrowhead) without infiltrating it or the surrounding soft tissue. Figure 9. (a, b) Coronal T2weighted MR image obtained with halfFourier RARE and axial contrast enhanced VIBE image show a left adrenal mass with areas of signal intensity similar to that of blood. Photograph of the specimen shows a hemorrhagic plicated adrenal cyst with hyalinized material. 3， 淋巴管瘤 腎上腺囊性的淋巴管瘤罕見，沒有癥狀。 MRI圖像特征與身體其他部位淋巴管瘤表現(xiàn)一樣。 表現(xiàn)為具有薄壁的 T1WI低信號(hào) T2WI高信號(hào)，沒有軟組織成分，沒有強(qiáng)化。 Figure 10. Coronal T1weighted, threedimensional, GRE MR image obtained with VIBE shows a lymphangioma, which has the typical appearance of a wellcircumscribed area of low signal intensity. Photograph of the specimen shows the thinwalled lymphangioma. 六，富血供病變 嗜鉻細(xì)胞瘤，起源于腎上腺髓質(zhì)嗜鉻細(xì)胞，沒有胞漿內(nèi)脂質(zhì)成分，所以在 GRE化學(xué)位移成像 outofphase上信號(hào)不減低，大部分嗜鉻細(xì)胞瘤在
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