About G. Petur Nielsen, MD
Dr. Nielsen has written extensively on neoplastic and non-neoplastic diseases and of bone and soft tissue. He is the co-author of several book chapters, has participated in writing a number of sections over the last few years for the World Health Organization (WHO) Classification of Tumours of Soft Tissue and Bone, and co-authored Diagnostic Pathology: Bone. Dr. Nielsen is a regular speaker at national and international pathology and orthopedic courses.
Departments, Centers, & Programs:
Clinical Interests:
- Bone and Soft Tissue Pathology
- Electron Microscopy
- Frozen Section Pathology
- Head and Neck Pathology
Treats:
- Adult
Languages:
- Icelandic
Locations
Mass General Pathology
55 Fruit St.
Boston, MA 02114
Phone: 617-643-0800
Medical Education
- MD, University of Iceland
- Residency, Massachusetts General Hospital
- Fellowship, Massachusetts General Hospital
American Board Certifications
- Pathology - Anatomic - General, American Board of Pathology
Accepted Insurance Plans
- Aetna
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield Medicare
- Cigna
- Commonwealth Care Alliance
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- Maine Community Health Options
- Mass General Brigham Health Plan
- MassHealth
- Medicaid CT
- Medicaid ME
- Medicaid NH
- Medicaid NY
- Medicaid RI
- Medicaid VT
- Medicare
- Medicare ACO
- Multiplan
- Railroad Medicare
- Senior Whole Health
- TriCare
- Tufts Health Plan
- United Health Care
- Wellpoint
- WellSense
- WellSense NH
Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.
Research
Research interests include pathology and biology of bone and soft tissue tumors and the application of ancillary studies in the diagnosis of bone and soft tissue neoplasms. Dr. Nielsen is especially interested in chordoma research. For more information about research concepts, co-authors, and to see a timeline, visit Dr. Nielsen's profile at the Harvard Clinical and Translational Science Center.
Publications
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- Giant Cell Tumor of the Uterus: A Report of 3 Cases With a Spectrum of Morphologic Features. Bennett JA, Sanada S, Selig MK, Hariri LP, Nielsen GP, Oliva E. Int J Gynecol Pathol. 2015 Apr 3. [Epub ahead of print]
- SMARCB1-deficient Vulvar Neoplasms: A Clinicopathologic, Immunohistochemical, and Molecular Genetic Study of 14 Cases. Folpe AL, Schoolmeester JK, McCluggage WG, Sullivan LM, Castagna K, Ahrens WA, Oliva E, Biegel JA, Nielsen GP. Am J Surg Pathol. 2015 Feb 25. [Epub ahead of print]
- Cytomorphologic features that distinguish schwannoma from other low-grade spindle cell lesions. Chebib I, Hornicek FJ, Nielsen GP, Deshpande V. Cancer Cytopathol. 2015 Mar;123(3):171-9. doi: 10.1002/cncy.21506. Epub 2015 Jan 8.