| Teflon granuloma in the nasopharynx: a potentially false-positive PET/CT finding. | |
| | |
MedLine Citation:
|
PMID: 15709148 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Positron emission tomography (PET) has become a critical diagnostic tool in the discovery and staging of malignancies in the head and neck. Although PET is accurate for detecting cancer, increased 18 F-fluorodeoxyglucose (FDG) uptake can be seen in healthy tissues such as muscle, fat, and glands and uptake can be seen in tissues affected by inflammation or granulomatous disease. Combined PET and CT (PET/CT) can often overcome these difficulties by fusing anatomic and physiological data, but radiographic findings of some disease processes can be confusing even with fused imaging techniques. We present two cases of FDG uptake in the posterior pharynx, localized by combined PET/CT, which was initially interpreted as squamous cell carcinoma. The increased activity was ultimately attributed to Teflon-induced granulomas. It is important for radiologists to recognize potential causes of false-positive PET/CT findings to improve our diagnostic accuracy and to avoid unnecessary biopsies and surgeries. |
| | |
Authors:
|
Chivonne Harrigal; Barton F Branstetter; Carl H Snyderman; Joseph Maroon |
Related Documents
:
|
15837408 - Detectability of liver metastases in malignant melanoma: prospective comparison of magn... 17938748 - Comparison of 11c-choline-pet/ct and whole body-mri for staging of prostate cancer. 19609618 - Metabolic tumor volumes by [18f]-fluorodeoxyglucose pet/ct correlate with occult metast... 8153308 - Staging of mediastinal non-small cell lung cancer with fdg pet, ct, and fusion images: ... 18054708 - Blood oxygen level-dependent (bold) mri: a novel technique for the assessment of myocar... 19747798 - A knowledge-based technique for liver segmentation in ct data. |
Publication Detail:
|
Type: Case Reports; Journal Article |
Journal Detail:
|
Title: AJNR. American journal of neuroradiology Volume: 26 ISSN: 0195-6108 ISO Abbreviation: AJNR Am J Neuroradiol Publication Date: 2005 Feb |
Date Detail:
|
Created Date: 2005-02-14 Completed Date: 2005-12-22 Revised Date: 2008-02-14 |
Medline Journal Info:
|
Nlm Unique ID: 8003708 Medline TA: AJNR Am J Neuroradiol Country: United States |
Other Details:
|
Languages: eng Pagination: 417-20 Citation Subset: IM |
Affiliation:
|
Department of Radiology, University of Pittsburgh Medical Center, 200 Lothrop Street, Pittsburgh, PA 15215, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Carcinoma, Squamous Cell / diagnosis* False Positive Reactions Granuloma, Foreign-Body / diagnosis*, etiology* Humans Male Nasopharyngeal Diseases / diagnosis* Nasopharyngeal Neoplasms / diagnosis* Polytetrafluoroethylene / adverse effects* Positron-Emission Tomography* Tomography, X-Ray Computed* |
| Chemical | |
Reg. No./Substance:
|
9002-84-0/Polytetrafluoroethylene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Necrotic nasopharyngeal mucosa: an ominous MR sign of a carotid artery pseudoaneurysm.
Next Document: Multilobular neurilemmoma of the tongue in a child.