Associate Professor of Pathology, Massachusetts General Hospital

Pathology

Gunnlaugur Nielsen practices Pathology. Gunnlaugur P. Nielsen is a published doctor and has 48 publications published. The lastest was: 'Juvenile Mandibular Chronic Osteomyelitis: Role of Surgical Debridement and Antibiotics.' He accepts Medicare.

Publications

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• Primary Pseudomyogenic Hemangioendothelioma of Bone.
• Juvenile Mandibular Chronic Osteomyelitis: Role of Surgical Debridement and Antibiotics.
• Cytomorphologic features that distinguish schwannoma from other low-grade spindle cell lesions.
• Prognostic significance of treatment-induced pathologic necrosis in extremity and truncal soft tissue sarcoma after neoadjuvant chemoradiotherapy.
• Role of post-operative radiation boost for soft tissue sarcomas with positive margins following pre-operative radiation and surgery.
• EWS-FLI1 Utilizes Divergent Chromatin Remodeling Mechanisms to Directly Activate or Repress Enhancer Elements in Ewing Sarcoma.
• Sclerosing Muc-4-Positive Sarcoma With Glandular Differentiation Resembling Sclerosing Epithelioid Fibrosarcoma.
• Interinstitutional Whole Slide Imaging Teleconsultation Service Development: Assessment Using Internal Training and Clinical Consultation Cases.
• Primitive myxoid mesenchymal tumor of infancy with rosettes: a new finding and literature review.
• EWSR1-PBX3: A novel gene fusion in myoepithelial tumors.
• A zebrafish model of chordoma initiated by notochord-driven expression of HRASV12.
• Primary Sclerosing Epithelioid Fibrosarcoma of Bone: Analysis of a Series.
• Vitamin E-Diffused Highly Cross-Linked UHMWPE Particles Induce Less Osteolysis Compared to Highly Cross-Linked Virgin UHMWPE Particles In Vivo.
• Programmed Cell Death Ligand 1 Expression in Osteosarcoma.
• BRAF mutation in 'sarcomas': a possible method to detect de-differentiated melanomas.
• A 33-year-old Man With Low Back Pain.
• Prognostic value of myogenic differentiation in undifferentiated pleomorphic sarcomas of soft tissue.
• Absence of chromosomal abnormalities in herniated orbital fat.
• High-Resolution Array CGH and Gene Expression Profiling of Alveolar Soft Part Sarcoma.
• Prognostic significance of miRNA-1 (miR-1) expression in patients with chordoma.
• Primary clear cell sarcoma of the tongue.
• Cross-species array comparative genomic hybridization identifies novel oncogenic events in zebrafish and human embryonal rhabdomyosarcoma.
• Primary Myoepithelioma of Bone: A Report of 8 Cases.
• Molecular Distinction of Chondrosarcoma From Chondroblastic Osteosarcoma Through IDH1/2 Mutations.
• Dedifferentiation in Gastrointestinal Stromal Tumor to an Anaplastic KIT-negative Phenotype: A Diagnostic Pitfall: Morphologic and Molecular Characterization of 8 Case...
• The use of radiation therapy in the management of selected patients with atypical lipomas.
• Mast cell sarcoma: a rare and potentially under-recognized diagnostic entity with specific therapeutic implications.
• Do histologic criteria predict biologic behavior of giant cell lesions?
• Neoadjuvant chemoradiotherapy for patients with high-risk extremity and truncal sarcomas: a 10-year single institution retrospective study.
• Prognostic factors and outcomes of patients with myxofibrosarcoma.
• mTORC1 in the Paneth cell niche couples intestinal stem-cell function to calorie intake.
• Fibrosing variant of Hashimoto thyroiditis is an IgG4 related disease.
• Fine Needle Aspiration Biopsy of an Unusual Follicular Adenoma with Sebaceous-Like Features.
• Eosinophilic angiocentric fibrosis is a form of IgG4-related systemic disease.
• Management of acral myxoinflammatory fibroblastic sarcoma.
• Sacral chordoma.
• Phase II study of high-dose photon/proton radiotherapy in the management of spine sarcomas.
• Role of sentinel lymph node biopsy in the staging of synovial, epithelioid, and clear cell sarcomas.
• Aberrant hyperactivation of akt and Mammalian target of rapamycin complex 1 signaling in sporadic chordomas.
• Intraosseous benign notochord cell tumors (BNCT): further evidence supporting a relationship to chordoma.
• Base of skull chordomas in children and adolescents: a clinicopathologic study of 73 cases.
• Comparative pathology of nerve sheath tumors in mouse models and humans.
• Ductulo-insular pancreatic endocrine neoplasms: clinicopathologic analysis of a unique subtype of pancreatic endocrine neoplasms.
• Metastatic patterns of extremity myxoid liposarcoma and their outcome.
• Genotyping Cancer-Associated Genes in Chordoma Identifies Mutations in Oncogenes and Areas of Chromosomal Loss Involving CDKN2A, PTEN, and SMARCB1.
• Synergistic Effects of Targeted PI3K Signaling Inhibition and Chemotherapy in Liposarcoma.
• Tissue Microarray Immunohistochemical Detection of Brachyury Is Not a Prognostic Indicator in Chordoma.

Schools

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• University Of Iceland Faculty Of Medicine

• St Joseph Hospital Iceland

• The National Hospital Iceland

• University Of Iceland

• Mass General Hospital

Doctors Specialties

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• Anatomic Pathology
• Pathology

Accepted Insurances

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Education

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• Massachusetts General Hospital
• University of Iceland

Hospital

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• Massachusetts General Hospital

Helpful Reviews

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Medicare Facts

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National Provider Identifier [NPI]	1174592653
Last Name Of The Provider	NIELSEN
First Name Of The Provider	GUNNLAUGUR
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