SILENT extra-adrenal retroperitoneal paragangliomas (PGLs) arise from dispersed paraganglias which tend to be symmetrically distributed in close relation to the aorta and sympatheticnervous system. They are rarely enc...SILENT extra-adrenal retroperitoneal paragangliomas (PGLs) arise from dispersed paraganglias which tend to be symmetrically distributed in close relation to the aorta and sympatheticnervous system. They are rarely encountered in everyday surgical practice.展开更多
Myelolipoma of the extra-adrenal gland is a rare,benign tumor comprising mature fat tissue and hematopoietic elements.Most myelolipomas are asymptomic and discovered incidentally.We presented a 44-year-old male who wa...Myelolipoma of the extra-adrenal gland is a rare,benign tumor comprising mature fat tissue and hematopoietic elements.Most myelolipomas are asymptomic and discovered incidentally.We presented a 44-year-old male who was admitted to our hospital for right kidney dystrophy and renal calculus.Ultrasound examination of right kidneys showed hydronephrosis.Intravenous pyelography showed the right renal contour was unclear,with a circular high-density shadow inside.The nephrectomy was performed with renal myelolipoma as a final pathologic diagnosis.展开更多
We report a rare case of paraganglioma that developed in the mesentery of terminal ileum. A 78-year-old woman complained of right-sided abdominal pain. Abdominal computed tomography revealed a solid heterogeneously en...We report a rare case of paraganglioma that developed in the mesentery of terminal ileum. A 78-year-old woman complained of right-sided abdominal pain. Abdominal computed tomography revealed a solid heterogeneously enhanced mass in the right lower abdomen. The tumor was laparoscopically excised. The mesenteric tumor was well circumscribed, ovoid, and encapsulated and measured 3 cm × 1.5 cm × 1.5 cm. Histological examination showed a cellular neoplasm comprised of nests and groups of tumor cells separated by fibrovascular connective tissue, giving a characteristic nested Zellballen pattern. Immunohistochemically, the tumor cells were positive for chromogranin, synaptophysin, CD56, and vimentin and negative for cytokeratins, SMA, CD34, CD117/c-kit and S100. On the basis of histologic and immunohistochemical features, a diagnosis of mesenteric paraganglioma was made. The operative and postoperative courses were unremarkable, and the patient was discharged on postoperative day 7. She was doing well 1 year after the surgery with no signs of recurrence. Extra-adrenal paragangliomas most commonly develop adjacent to the aorta, particularly the area corresponding to the organ of Zuckerkandl. Mesenteric paraganglioma, as in our case, is extremely rare; only 11 cases have been reported in the literature. We herein discuss the clinical findings of these cases.展开更多
文摘SILENT extra-adrenal retroperitoneal paragangliomas (PGLs) arise from dispersed paraganglias which tend to be symmetrically distributed in close relation to the aorta and sympatheticnervous system. They are rarely encountered in everyday surgical practice.
文摘Myelolipoma of the extra-adrenal gland is a rare,benign tumor comprising mature fat tissue and hematopoietic elements.Most myelolipomas are asymptomic and discovered incidentally.We presented a 44-year-old male who was admitted to our hospital for right kidney dystrophy and renal calculus.Ultrasound examination of right kidneys showed hydronephrosis.Intravenous pyelography showed the right renal contour was unclear,with a circular high-density shadow inside.The nephrectomy was performed with renal myelolipoma as a final pathologic diagnosis.
文摘We report a rare case of paraganglioma that developed in the mesentery of terminal ileum. A 78-year-old woman complained of right-sided abdominal pain. Abdominal computed tomography revealed a solid heterogeneously enhanced mass in the right lower abdomen. The tumor was laparoscopically excised. The mesenteric tumor was well circumscribed, ovoid, and encapsulated and measured 3 cm × 1.5 cm × 1.5 cm. Histological examination showed a cellular neoplasm comprised of nests and groups of tumor cells separated by fibrovascular connective tissue, giving a characteristic nested Zellballen pattern. Immunohistochemically, the tumor cells were positive for chromogranin, synaptophysin, CD56, and vimentin and negative for cytokeratins, SMA, CD34, CD117/c-kit and S100. On the basis of histologic and immunohistochemical features, a diagnosis of mesenteric paraganglioma was made. The operative and postoperative courses were unremarkable, and the patient was discharged on postoperative day 7. She was doing well 1 year after the surgery with no signs of recurrence. Extra-adrenal paragangliomas most commonly develop adjacent to the aorta, particularly the area corresponding to the organ of Zuckerkandl. Mesenteric paraganglioma, as in our case, is extremely rare; only 11 cases have been reported in the literature. We herein discuss the clinical findings of these cases.
