1/58. Fine needle aspiration diagnosis of extraadrenal myelolipoma presenting as a pleural mass. A case report.BACKGROUND: myelolipoma is a benign tumor composed of mature adipose tissue and hematopoietic cells. Although they are commonly found in adrenal glands, extraadrenal myelolipomas (EMLs) are rare but well documented. They have been found in various sites, including mediastinum, liver, stomach, lungs, pelvis, spleen, retroperitoneum, presacral region and mesentery. EMLs must be distinguished from extramedullary hematopoieses, which are also composed of hematopoietic elements but may lack adipose tissue and are associated with anemia and marked bone marrow hyperplasia. CASE: We describe a case of a pleura-based, extraadrenal myelolipoma in a 53-year-old female with unremarkable bone marrow findings that were initially encountered on fluoroscopy-guided fine needle aspiration (FNA). One year later the mass was removed via open thoracotomy. It showed typical EML features histologically. CONCLUSION: EML manifests on aspiration cytology as a cellular specimen with numerous trilineage hematopoietic cells and a variable proportion of mature adipose cells. To our knowledge, FNA cytology of EML has not been found in this location before. Aspiration biopsy offers a simple and reliable method for the diagnosis of EML in the presence of appropriate clinical settings.- - - - - - - - - - ranking = 1keywords = adipose (Clic here for more details about this article) |
2/58. A case of lung myelolipomatosis in a patient with bronchial carcinoid.Myelolipomas are very rare benign tumours composed of an admixture of mature adipose tissue and normal haematopoietic cells. Although they are most commonly found in the adrenal glands, extra-adrenal myelolipomas are documented. We described a case of myelolipoma arising in the lung in a 52-year-old man. The lesion was found incidentally in association with a carcinoid. To our knowledge, this is the second instance of this neoplasm presenting as a lung lesion, and the first case associated with bronchial carcinoid. Pathogenesis and aetiology of myelolipomas are referred to in this paper with special regard to the clinical and pathological findings.- - - - - - - - - - ranking = 0.33333333333333keywords = adipose (Clic here for more details about this article) |
3/58. Bilateral adrenal myelolipoma.Myelolipomas are rare benign tumors often found incidentally due, in the majority of cases, to the fact that they are asymptomatic. The incidence of adrenal myelolipomas at autopsy is low (0.2%). These tumors are made up of fat and hematopoietic cells. Their origin is unclear and different theories have been put forward, including development from rests of mesenchymal stem cells, embolism of bone marrow, extramedullary hematopoiesis and, according to the most widely accepted theory, metaplasia of the reticuloendothelial cells of blood capillaries. Due to their uncertain etiology and low frequency, management of adrenal myelolipomas is usually individualized and carried out depending on the protocols of each center. The development of improved imaging techniques has increased their diagnosis in routine clinical practice. Thus, they have been included in the heterogeneous group of 'incidentalomas' of the adrenal gland.- - - - - - - - - - ranking = 0.0013832437547127keywords = fat (Clic here for more details about this article) |
4/58. Fine-needle aspiration cytology of adrenal myelolipoma: case report and review of the literature.Adrenal myelolipoma is a rare nonfunctioning tumor consisting histologically of an admixture of adipose tissue and extramedullary hemopoietic elements within the adrenal glands. Less than 300 cases have been reported in the literature and only 15 case reports have described cytological findings of this tumor obtained by fine-needle aspiration (FNA). We report a case of a 48-year-old male who had had anaplastic large cell carcinoma of the right lung. The left adrenal mass was encountered during a staging workup that led to a clinical suspicion of metastatic disease to the adrenal gland. FNA under computed tomography (CT) guidance was performed obtaining cytological material from which diagnosis of myelolipoma was made. The findings reemphasized an important role of FNA in investigation of adrenal mass. The literature on FNA cytology of adrenal myelolipoma is reviewed. Diagn. Cytopathol. 1999;21:409-412.- - - - - - - - - - ranking = 0.33333333333333keywords = adipose (Clic here for more details about this article) |
5/58. Retroperitoneal hemorrhage due to spontaneous rupture of adrenal myelolipoma.BACKGROUND: A very rare case of retroperitoneal bleeding due to spontaneous rupture of a large adrenal myelolipoma in a 62-year-old woman is reported. methods/RESULTS: She consulted the emergency room of the Nagano red cross Hospital with a complaint of sudden left flank pain. A computerized tomography (CT) scan revealed a tumor with areas of fat density and hematoma in the left retroperitoneal space. After her general condition improved, an operation was performed. The tumor strongly adhered to the left kidney and a left nephrectomy with the tumor was curative. Histologic diagnosis was adrenal myelolipoma. No blood transfusion was required. CONCLUSIONS: A CT scan is very useful in the pre-operative diagnosis of adrenal myelolipoma with retroperitoneal hemorrhage. Watch and wait treatments before operation and nephrectomy with adhered tumor are safe and curative.- - - - - - - - - - ranking = 0.0013832437547127keywords = fat (Clic here for more details about this article) |
6/58. Clinics in diagnostic imaging (43). Right adrenal myelolipoma.A 53-year-old woman who presented with drug-induced jaundice and urinary tract infection was incidentally found to have a large abdominal mass. Radiographs and ultrasonography showed a large fatty mass located between the right lobe of the liver and the right kidney. diagnosis of right adrenal myelolipoma was made on computed tomography. The patient was treated conservatively. The causes of large fatty masses of the abdomen in adults are discussed, with emphasis on the imaging appearances of myelolipoma, renal angiomyolipoma, cystic teratoma and liposarcoma.- - - - - - - - - - ranking = 0.0027664875094253keywords = fat (Clic here for more details about this article) |
7/58. Mediastinal myelolipoma: CT and MRI appearances.A 72-year-old man presented with a mediastinal mass on chest radiograph. Computed tomography and MR imaging showed that the mass consisted of both fatty and small nodular soft tissue components, highly suggestive of an extramedullary hematopoiesis or a myelolipoma. A CT-guided needle biopsy was next performed and confirmed the diagnosis. We discuss the CT and MR imaging appearances es of this tumor and usefulness of a CT-guided needle biopsy to avoid surgery in asymptomatic patients.- - - - - - - - - - ranking = 0.0013832437547127keywords = fat (Clic here for more details about this article) |
8/58. Mediastinal extraadrenal myelolipoma: report of a case.We herein report a case of surgically resected mediastinal extraadrenal myelolipoma. myelolipoma is an uncommon tumor composed of adipose tissue and normal hematopoietic elements, and is most often found in the adrenal glands. We could find only five such cases of mediastinal myelolipoma in the English literature.- - - - - - - - - - ranking = 0.33333333333333keywords = adipose (Clic here for more details about this article) |
9/58. Giant adrenal myelolipoma: case report and review of the literature.myelolipoma is a tumor-like growth composed of mature fat tissue and bone marrow elements. It occurs in the adrenal gland or as an isolated soft tissue mass. It may be associated with endocrine disorders such as hermaphroditism, Cushing's disease, Addison's disease and obesity of unknown cause. These lesions rarely measure more than 5 cm in diameter, although giant tumors have been reported in the literature. The fifth largest surgically resected adrenal myelolipoma in the literature is reported and its clinical associations and, macroscopic and microscopic features are discussed.- - - - - - - - - - ranking = 0.0013832437547127keywords = fat (Clic here for more details about this article) |
10/58. Adrenal myelolipoma--report of two cases.Adrenal myelolipoma, which is composed of hematopoietic and adipose elements, is a rare benign tumor. Most adrenal myelolipomas are asymptomatic and are found incidentally. We report two cases of adrenal myelolipoma. One was a middle-aged woman with right flank pain. Tumor size increased 8 years later. The other patient was a 63-year-old man presenting with right flank soreness. The right adrenal tumor was found by abdominal sonography. Both of them received adrenalectomy to relieve symptoms and the pathologic results showed adrenal myelolipoma. The clinical, radiologic and pathologic characteristics of these two cases are discussed together with a review of the literature.- - - - - - - - - - ranking = 0.33333333333333keywords = adipose (Clic here for more details about this article) |
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