paragangliomas are extra-adrenal counterparts of pheochromocytomas and are found at various anatomical sites such as the retroperitoneum, mediastinum, jugular foramen and carotid bifurcation, the latter two fonns being coined as chemodectomas. the vertebral column, especially the llullbar zone, is one of the rarest sites to be involved by paragangliomas. these lesions may have secretory functio...

introduction paragangliomas are mostly localized in the adrenal medulla and they are usually pheochromocytomas, derived from the neural crest, but otherwise mesenteric paragangliomas are extremely rare tumors. case presentation in this article we represent a 59-year-old female with an abdominal mass and pain due to mesenteric paraganglioma. conclusions paragangliomas can occur as mesenteric tum...

OBJECTIVES Adrenal pheochromocytomas are rare neuroendocrine tumours, however their prevalence is probably underestimated - in some series 50% were diagnosed at autopsy. The clinical presentation varies among patients, that is why diagnosis might be difficult to establish. Pheochromocytoma may coexist with paraganglioma and when paraganglioma is diagnosed, the patient should be screened for phe...

PURPOSE To report a case of a paraganglioma in the right eye with metastatic disease in the fellow eye 3 years later. METHODS A 70-year-old man presented with a painful amblyopic right eye; rubeosis iridis and a large choroidal tumor were found. The tumor was treated by enucleation. Pathology diagnosed the tumor as a paraganglioma. Screening for other tumors or metastatic disease was negative...

Paraganglioma affecting the cauda equina region is very rare and can be misinterpreted as an ependymoma which is more common at this site. A 38-year-old woman with a paraganglioma in the cauda equina is presented. MRI revealed a well-circumscribed, intradural, extramedullary tumor nodule with the dimensions of 2.5x1x1 cm. The patient underwent L3 laminectomy and total excision o...

INTRODUCTION Thyroid paraganglioma is a very rare malignant neuroendocrine tumor. Immunohistochemical features of thyroid paraganglioma are helpful for the diagnosis. CASE REPORT A 69-year-old female came to hospital with the presence of a growing thyroid nodule of the left lobe. Ultrasonic neck examination showed 5 cm hypoechoic nodule in the left thyroid lobe. Thyroid scintigraphy showed a ...

Urinary bladder paraganglioma is an extra-adrenal pheochromocytoma. As it lacks specific symptoms and because of its rare occurrence, presents incidentally while tumour handling. A forty-eight-year-old female who presented with nausea, vomiting, weight loss, pain abdomen hematuria was diagnosed a mass. She scheduled for transurethral resection the tumour. On manipulation, showed numerous fluctu...

Tympanic paragangliomas usually present as a vascular middle ear mass, with the most common presenting symptoms being pulsatile tinnitus and hearing loss. We report an unusual case of a recurrent tympanic paraganglioma extending along the Eustachian tube and nasopharynx, presenting with recurrent epistaxis. Paraganglioma timpánico con extensión a trompa de Eustaquio y nasofaringe: a propósito d...

Gangliocytic paragangliomas are rare benign tumors which are usually encountered in the second portion of the duodenum. Histogenesis of these tumors is incompletely understood. Patients usually present with upper gastrointestinal bleeding. The endoscopic features of gangliocytic paraganglioma do not differ from those of other submucosal tumors. Therefore, they can be diagnosed histologically by...

BACKGROUND Paragangliomas are catecholamine-secreting tumors of the paraganglia. Perioperative mortality of children with paraganglioma is high, but preoperative therapy and anesthetic management of paraganglioma resection are controversial in children. The literatures on catecholamine-induced cardiomyopathy are limited to several case reports,with few reports of studies on children. CASE PRE...