myelolipoma

myelolipoma

 [mi″ĕ-lo-lip´o-mah]
a rare benign tumor of the adrenal gland composed of adipose tissue, lymphocytes, and primitive myeloid cells.

my·e·lo·li·po·ma

(mī'ĕ-lō-li-pō'mă),
Nodular accumulations of cells derived from localized proliferation of reticuloendothelial tissue in the blood sinuses of the adrenal glands; grossly, the nodules may seem to be adipose tissue, but actually are foci of bone marrow containing erythropoietic or myeloid cells.

my·e·lo·li·po·ma

(mī'ĕ-lō-li-pō'mă)
Nodular foci that are not neoplasms, but probably represent localized proliferation of reticuloendothelial tissue in the suprarenal glands; foci of bone marrow containing erythropoietic or myeloid cells.
Mentioned in ?
References in periodicals archive ?
In this paper, we report imaging findings of an adrenal tumor containing a pseudocyst and a myelolipoma which was confused with adrenocortical carcinoma.
Prevalence of adrenal myelolipoma during abdominal computed tomography at Hospital Universitario San Vicente Fundacion
Primary variants of lipoma can be listed as angiolipoma, myolipoma, fibrolipoma, angiomyolipoma, myelolipoma, chondroid lipoma, chondrolipoma, fusiform cell, and pleomorphic lipoma.
Seventeen Alpha-Hydroxylase Deficiency Associated with Absent Gonads and Myelolipoma: A Case Report and Review of Literature.
The most commonly described collision tumor in the adrenal gland is adrenal adenoma with myelolipoma.[1] The other collision tumors reported in the adrenal glands include cases such as metastasis into an adenoma or myelolipoma and pheochromocytoma with adenoma or myelolipoma.[2],[3] In the present case, the larger tissue specimen demonstrated pheochromocytoma morphology, whereas the smaller tissue specimen showed typical characteristics of adrenocortical adenoma of the adrenal gland.
Adrenal myelolipoma (AML) is a relatively rare benign tumor composed of mature adipose tissues and a variable amount of hematopoietic elements.
Gross morphology and histopathology results confirmed the diagnosis of giant adrenal myelolipoma (Figure 2,3).
In the light of the pathological findings, the mass was diagnosed to be a myelolipoma.
* We reported myelolipoma in a patient with 17 alpha-hydroxylase defciency.
Functional status N (%) Histological N (%) result Nonfunctional 1411 (72.69) Adrenal adenoma 496 (53.62) tumor Subclinical 152 (7.83) Pheochromocytoma 172 (18.59) Cushing syndrome Primary hyperal- 82 (4.22) Paragangliomas/ 45 (4.86) dosteronism ganglioneuromas Pheochromocytoma 227 (11.69) Adrenal cortical 15 (1.62) carcinoma Adrenal cortical 25 (1.29) Cyst 54 (5.84) carcinoma Congenital 4 (a) Myelolipoma 41 (4.43) adrenal hyperplasia Unknown 40 (2.06) Schwannoma 10 (1.08) functional Hyperplasia 15 (1.62) status Metastatic 8 (0.86) carcinoma Others 69 (7.46) (b) (a) 561 patients with 17-OHP data available.
(i) Cystic masses: endothelial cyst, pseudocyst, and hydatid cyst (ii) Solid masses: adenoma, nodular hyperplasia, carcinoma, metastases, pheochromocytoma, neuroblastic tumors, neurofibroma, schwannoma, leiomyoma, angiosarcoma, hamartoma, tuberculoma, and amyloidosis (iii) Fat-containing masses: lipoma and myelolipoma Modified from Arnaldi and Boscaro [1].
The differential diagnosis included adrenocortical carcinoma, pheochromocytoma, myelolipoma, metastasis from an unidentified primary tumor, sarcoma, and lymphoma.