title: Pheochromocytoma: a twenty year experience at the University Hospital.
abstract: During the past 20 years (1970-90), we had 24 patients with pheochromocytoma: 19 diagnosed clinically and 5 post-mortem. Their ages ranged from 17 to 74 (mean, 43.2 years). Males (n = 14) outnumbered females (n = 10), a 1.41:1 M:F ratio. A majority were symptomatic (95%), with a typical triad of headaches, palpitations and diaphoresis. Most frequent finding was hypertension (95%). It was sustained in 60% and paroxysmal in 35%. In 6 patients (25%) pheochromocytomas were bilateral, all familial. Fifteen were solitary adrenal tumors (63%); 3 (12.5%) were extra-adrenal: 2 intra-abdominal, and 1 cardiac paraganglioma of right atrium. Of 6 familial cases, 4 were associated to Von Hippel-Lindau (VHL) disease, while 2 were multiple endocrine neoplasia (MEN-II) patients. All familial cases were bilateral and in the adrenals. There were no malignancies. Among the 19 clinical cases pre-operative Dx was made by positive urine VMA or catecholamines urine levels: (95 and 100% sensitivity respectively). Preoperative visualization by CT or MRI was done in 62% of the most recent patients. In 5 earlier cases the diagnosis was made post mortem: 3 died of cerebral hemorrhage, 1 with a pons infarct and 1 with congestive heart failure (CHF). There were 2 post-operative deaths and another died 13 years later from thyroid medullary carcinoma. Of the 19 operated, 13 (68%) were cured. Thus pheochromocytomas retain considerable morbidity and some mortality. These rare tumors constitute a clinical diagnostic challenge yet a rewarding therapeutic experience for the alert physician.
authors.affiliation: University of Puerto Rico, San Juan.
authors.forename: F
authors.initials: F
authors.lastname: Aguiló
authors.forename: N
authors.initials: N
authors.lastname: Tamayo
authors.forename: E
authors.initials: E
authors.lastname: Vázquez-Quintana
authors.forename: V
authors.initials: V
authors.lastname: Rabell
authors.forename: L
authors.initials: L
authors.lastname: Haddock
authors.forename: M
authors.initials: M
authors.lastname: Allende
authors.forename: H
authors.initials: H
authors.lastname: Pagán
authors.forename: A
authors.initials: A
authors.lastname: González
mesh_terms: D000293:Adolescent; D000310:Adrenal Gland Neoplasms / Q000145:classification / Q000175:diagnosis* / Q000601:surgery; D000328:Adult; D000368:Aged; D002395:Catecholamines / Q000652:urine; D002648:Child; D003952:Diagnostic Imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010673:Pheochromocytoma / Q000145:classification / Q000175:diagnosis* / Q000601:surgery; D014642:Vanilmandelic Acid / Q000652:urine
chemical_list: D002395:Catecholamines; D014642:Vanilmandelic Acid