Abstract Library

#1838 A Rare Case of Ectopic Cushing's Syndrome

Introduction: Cushing's syndrome has an incidence of 0.7 - 2.4 per million people per year. In 15% of cases, it’s associated with non-pituitary tumors secreting ACTH. Pheochromocytoma accounts for 5% of ectopic ACTH secretion.

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author: Steina L

Authors: Steina L, Steina S, Pirags V, Ozolins A, Gardovskis J,

Keywords: malignant pheochromocytoma,

#1305 PRRT for Malignant Pheochromocytomas and Paragangliomas: The Singapore General Hospital Experience

Introduction: In recent years, the use of 177Lu-DOTATATE radioisotope therapy has been expanded to patients with metastatic pheochromocytomas and paragangliomas (PCC/PGL). Although this is not the standard of care, treatment options are limited for those with MIBG negative disease. Our centre has treated over 40 patients with NETS with PRRT since 2012.

Conference: 13th Annual ENETSConcerence (2016)

Presenting Author:

Authors: Loh L, Lim D, Loke K, Ng D,

Keywords: PRRT, pheochromocytoma, paraganglioma,

#387 Combined Blockade of Several Signalling Pathways Shows Marked Anti-Tumor Potential in Two Novel Mouse Phaeochromocytoma Cell Lines

Introduction: The current study explores novel targeted therapies for malignant pheochromocytomas (PCCs) and paragangliomas, utilizing a more benign (MPC) and a more malignant (MTT) PCC cell line. We have previously shown that the dual PI3K/mTORC1 inhibitor NVP-BEZ235 significantly reduced MPC and MTT cell viability, but increased ERK signalling.

Conference: 9th Annual ENETSConcerence (2012)

Presenting Author:

Authors: Noelting S, Garcia E, Alusi G, Korbonits M, Grossman A,

Keywords: pheochromocytoma, cell lines, proliferation, MAPK, mTOR,

#177 Dissociation Between Iodine-131 meta-iodobenzylguanidine (MIBG) Scintigraphy and Radiolabeled Octreotide in the Localization and Management of Sporadic Malignant Pheochromocytoma: An Impact on Management

Introduction: The Rx of malignant pheochromocytomas w/negative MIBG scan remains a challanging problem. Octreoscan is helpful in localization and Rx planning in such cases. Rx using SST analog & PRRT is a desirable goal.

Conference: 8th Annual ENETSConcerence (2011)

Presenting Author:

Authors: Ahmed M,

Keywords: malignant pheochromocytoma, octreotide scintigraphy, [(131)I]MIBG, SST analogs ,

#142 The role of 18F DOPA-PET in a case of malignant pheochromcytoma

Introduction: Pheocromocytoma is a rare tumor arising from chromaffin cells of adrenal medullary or extra adrenal paraganglionic tissue. Histological criteria cannot differentiate benign from malignant pheocromocytomas. The diagnosis of a malignant pheocromocytoma requires local invasion, recurrence and documented metastatic disease. The radionuclide scanning (123I - 131I-MIBG) is a fundamental diagnostic tool used to confirm the biochemical and radiological diagnosis of pheochromocytoma. In fact, MIBG scanning may confirm that the visualised lesion in an adrenal gland is indeed a pheochromocytoma and detect extra-adrenal paraganglionic tissue. However, MIBG scans are negative in around 15% of benign pheochromocytomas and in up to 50% of malignant ones. Other radionuclide techniques (18FDG-PET, 18F-DOPA-PET, 18F-FDA-PET) have been successfully used in investigation of pheochromocytomas. 18F-DOPA-PET and 18F-FDA-PET have been reported to be highly sensitive and specific for benign pheochromocytomas, while 18FDG-PET can be useful for malignant lesions with higher metabolic activity.

Conference: 7th Annual ENETSConcerence (2010)

Presenting Author: De Marinis L

Authors: Lugli F, Fusco A, Bianchi A, Iacovazzo D, Mormando M,

Keywords: malignant pheochromocytoma, 18F-DOPA-PET, MIBG,