MR Imaging of Adrenal Myelolipomas

Musante, F; Derchi, L. E.; Bazzocchi, Massimo; Avataneo, T; Gandini, Giovanni; Mucelli, Roberto Pozzi

doi:10.1097/00004728-199101000-00017

Cited by 31 publications

(17 citation statements)

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“…These tumors, however, are usually catecholamine-secreting and therefore symptomatic, and do not demonstrate a drop in signal on opposed-phase images, like the tumor in our case. The hematopoietic element in myelolipomas usually has SI comparable to that of the spleen on T2-weighted images, and, to our knowledge, there are no reports of such tumors with very high SI (1,3,6,10). We hypothesize that the very high SI of the tumor on T2-weighted images in our case may be attributed to a combination of increased interstitial space and intense hemorrhagic infiltration, as was demonstrated on pathology.…”

Section: Discussionsupporting

confidence: 62%

Giant adrenal myelolipoma with minimal fat content in a patient with homozygous beta‐thalassemia: Appearance on MRI

Kelekis

Alexopoulou

Brountzos

et al. 2003

Magnetic Resonance Imaging

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Giant adrenal myelolipoma is an uncommon entity. We present the atypical MR imaging findings of a giant adrenal myelolipoma in a patient with homozygous beta-thalassemia with histopathology correlation. The tumor showed a drop in signal on the opposed-phase images, with no evidence of macroscopic fat contents, and demonstrated very high signal intensity on T2-weighted images. Giant adrenal myelolipoma should be considered in the differential diagnosis of tumors with the combination of the above MR imaging characteristics.

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Section: Discussionsupporting

confidence: 62%

Giant adrenal myelolipoma with minimal fat content in a patient with homozygous beta‐thalassemia: Appearance on MRI

Kelekis

Alexopoulou

Brountzos

et al. 2003

Magnetic Resonance Imaging

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“…CT is regarded as the most sensitive imaging procedure for this purpose, and the demonstration of fat density within an adrenal mass by CT is essentially diagnostic of adrenal myelolipoma [2]. Although MRI does not add significantly to the tissue characteristics of these tumors [3], it can confirm the adrenal origin of the tumor, and thus suggest a preferred diagnosis when considering other tumors, such as retroperitoneal lipoma and liposarcoma, as well as renal angiomyolipoma extending from the upper renal pole. These tumors generally are incidental findings and require no further workup or treatment.…”

Section: Discussionmentioning

confidence: 99%

Giant adrenal myelolipomas: CT and MRI findings

et al. 1994

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The computed tomographic (CT) and magnetic resonance imaging (MRI) features of three giant myelolipomas of the adrenal gland are presented in two patients. CT demonstrates large, fatty retroperitoneal tumors that may be confused with retroperitoneal liposarcoma or very large renal angiomyolipoma. MRI with coronal and sagittal imaging is more sensitive than CT in defining the most likely origin of these tumors as the adrenal gland.

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“…The radiological appearance of a myelolipoma depends upon the amount and distribution of the soft tissue and fatty components, which can be highly variable, ranging from homogeneous fat-density masses to heterogeneous masses with fat density areas to atypical lesions without fatty components [5]. In most lesions, the fatty component is predominant, leading to the characteristic radiological appearance.…”

Section: Discussionmentioning

confidence: 99%

“…MRI can improve tissue characterization by defining hemorrhage, and it can help to confirm the adrenal origin of a mass [1]. However, MR was found to be not helpful in cases with equivocal CT findings [5]. To the best of our knowledge, chemical shift imaging plays no role in the MR evaluation of myelolipomas.…”

Section: Discussionmentioning

confidence: 99%