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Article: Incidental thyroid carcinoma by FDG-PET/CT: a study of clinicopathological characteristics

TitleIncidental thyroid carcinoma by FDG-PET/CT: a study of clinicopathological characteristics
Authors
Issue Date2011
PublisherSpringer New York LLC. The Journal's web site is located at http://www.annalssurgicaloncology.org
Citation
Annals of Surgical Oncology, 2011, v. 18 n. 2, p. 472-478 How to Cite?
AbstractBACKGROUND: The rising incidence of incidental thyroid carcinoma (ITC) detected during fluoro-2-deoxy-D: -glucose (FDG)-positron emission tomography (PET)/computed tomography (CT) scanning poses a challenge to clinicians. The present study aims to critically evaluate the clinicopathological characteristics of ITC detected by FDG-PET/CT. METHODS: Among the 557 patients managed at our institution, 40 (7.2%) patients were identified as having ITC. Of these, 22 patients had their tumor detected by FDG-PET/CT (PET group) and 11 by ultrasonography (USG group). Additional bedside ultrasonography +/- fine-needle aspiration (FNA) was done in all patients at their clinic visit. The clinicopathological characteristics were compared between the PET and USG groups. RESULTS: The PET group had significantly more patients with history of nonthyroidal malignancy (P < 0.001). Papillary carcinoma was the most common histological type in both groups. Despite having similar histological and prognostic features including tumor size, tumor multifocality, capsular invasion, extrathyroidal extension, and lymph node metastases, tumor bilaterality (or presence of contralateral tumor focus) was significantly more frequent in the PET than the USG group (P = 0.04). The tumors were also more advanced by the tumor-node-metastasis (TNM) staging system in the PET group (P = 0.021). None of the contralateral tumor foci were evident preoperatively. One patient in the USG group developed metastatic thyroid carcinoma in neck lymph nodes 28 months after thyroid resection. CONCLUSION: ITC by FDG-PET/CT had higher incidence of tumor bilaterality than those detected by ultrasonography. Total thyroidectomy should be considered for ITC detected by FDG-PET/CT even for tumor size <10 mm.
Persistent Identifierhttp://hdl.handle.net/10722/133796
ISSN
2015 Impact Factor: 3.655
2015 SCImago Journal Rankings: 1.902
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLaw, TTen_US
dc.contributor.authorLang, BHH-
dc.date.accessioned2011-05-31T07:03:00Z-
dc.date.available2011-05-31T07:03:00Z-
dc.date.issued2011en_US
dc.identifier.citationAnnals of Surgical Oncology, 2011, v. 18 n. 2, p. 472-478en_US
dc.identifier.issn1068-9265en_US
dc.identifier.urihttp://hdl.handle.net/10722/133796-
dc.description.abstractBACKGROUND: The rising incidence of incidental thyroid carcinoma (ITC) detected during fluoro-2-deoxy-D: -glucose (FDG)-positron emission tomography (PET)/computed tomography (CT) scanning poses a challenge to clinicians. The present study aims to critically evaluate the clinicopathological characteristics of ITC detected by FDG-PET/CT. METHODS: Among the 557 patients managed at our institution, 40 (7.2%) patients were identified as having ITC. Of these, 22 patients had their tumor detected by FDG-PET/CT (PET group) and 11 by ultrasonography (USG group). Additional bedside ultrasonography +/- fine-needle aspiration (FNA) was done in all patients at their clinic visit. The clinicopathological characteristics were compared between the PET and USG groups. RESULTS: The PET group had significantly more patients with history of nonthyroidal malignancy (P < 0.001). Papillary carcinoma was the most common histological type in both groups. Despite having similar histological and prognostic features including tumor size, tumor multifocality, capsular invasion, extrathyroidal extension, and lymph node metastases, tumor bilaterality (or presence of contralateral tumor focus) was significantly more frequent in the PET than the USG group (P = 0.04). The tumors were also more advanced by the tumor-node-metastasis (TNM) staging system in the PET group (P = 0.021). None of the contralateral tumor foci were evident preoperatively. One patient in the USG group developed metastatic thyroid carcinoma in neck lymph nodes 28 months after thyroid resection. CONCLUSION: ITC by FDG-PET/CT had higher incidence of tumor bilaterality than those detected by ultrasonography. Total thyroidectomy should be considered for ITC detected by FDG-PET/CT even for tumor size <10 mm.-
dc.languageengen_US
dc.publisherSpringer New York LLC. The Journal's web site is located at http://www.annalssurgicaloncology.orgen_US
dc.relation.ispartofAnnals of Surgical Oncologyen_US
dc.rightsThe original publication is available at www.springerlink.com-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsThe Author(s)en_US
dc.subject.meshAdenocarcinoma, Follicular - diagnosis - surgery-
dc.subject.meshCarcinoma, Papillary - diagnosis - surgery-
dc.subject.meshFluorodeoxyglucose F18 - diagnostic use-
dc.subject.meshPositron-Emission Tomography-
dc.subject.meshRadiopharmaceuticals - diagnostic use-
dc.titleIncidental thyroid carcinoma by FDG-PET/CT: a study of clinicopathological characteristicsen_US
dc.typeArticleen_US
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1068-9265&volume=18&issue=2&spage=472&epage=478&date=2011&atitle=Incidental+thyroid+carcinoma+by+FDG-PET/CT:+a+study+of+clinicopathological+characteristics-
dc.identifier.emailLang, BHH: blang@hkucc.hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1245/s10434-010-1287-6en_US
dc.identifier.pmid20740320-
dc.identifier.pmcidPMC3032177-
dc.identifier.scopuseid_2-s2.0-79951555340-
dc.identifier.hkuros179947-
dc.identifier.volume18en_US
dc.identifier.issue2en_US
dc.identifier.spage472en_US
dc.identifier.epage478en_US
dc.identifier.isiWOS:000286938600027-
dc.publisher.placeUnited States-
dc.description.otherSpringer Open Choice, 31 May 2011en_US
dc.identifier.citeulike7764131-

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