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Characteristics of ectopic parathyroid glands in 145 cases of primary hyperparathyroidism.
MedLine Citation:
PMID:  20497936     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
OBJECTIVE: To determine the prevalence of primary hyperparathyroidism (PHPT) arising from ectopic parathyroid glands, to analyze the clinical, biochemical, and anatomic characteristics of such cases, and to compare these characteristics with those found in PHPT associated with orthotopic parathyroid glands.
METHODS: We conducted a retrospective study of cases of PHPT evaluated and treated at a referral center. Differences between patients with orthotopic and ectopic parathyroid glands were analyzed statistically.
RESULTS: During a recent 5-year period at our institution, 145 cases of PHPT were treated operatively by 3 experienced surgeons. An ectopic parathyroid location was detected in 13 cases (9%). Of the 13 ectopic glands, 4 (31%) were at the tracheoesophageal groove, 4 (31%) were intrathymic, 2 (15%) were intrathyroidal, and 1 each was located in the aortopulmonary window, the anterior (nonthymic) mediastinum, and the submaxillary region. Patients with PHPT attributable to ectopic adenomas had significantly higher serum calcium levels (12.6 ± 0.9 mg/dL versus 11.4 ± 1.2 mg/dL; P = .05) and larger tumors (25 ± 6.1 mm versus 19 ± 7.6 mm; P = .05) than did patients with orthotopic parathyroid glands. Moreover, hyperparathyroidism- related bone disease was significantly more frequent in patients with abnormal ectopic parathyroid glands than in those with orthotopic parathyroid glands (23% versus 1.5%, respectively; P = .04).
CONCLUSION: In 9% of all cases of PHPT in our study, the condition was associated with ectopically located parathyroid glands. Such cases are usually characterized by larger parathyroid glands, higher serum calcium levels, and a higher frequency of severe bone disease.
Authors:
Victoria Mendoza; Claudia Ramírez; Amparo E Espinoza; Gloria A González; Juan F Peña; Martha E Ramírez; Irma Hernández; Moisés Mercado
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists     Volume:  16     ISSN:  1934-2403     ISO Abbreviation:  Endocr Pract     Publication Date:    2010 Nov-Dec
Date Detail:
Created Date:  2011-01-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9607439     Medline TA:  Endocr Pract     Country:  United States    
Other Details:
Languages:  eng     Pagination:  977-81     Citation Subset:  IM    
Affiliation:
Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México City, México. vmendozazu@yahoo.com
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