scholarly journals Temporal Bone Metastasis of Follicular Thyroid Carcinoma in an Asymptomatic Patient: A Rare Case

Author(s):  
Ahmad Khairi Mohamed ◽  
Irfan Mohamad ◽  
Norazlina Mat Nawi ◽  
Mohd Fazrin Mohd Rohani

Introduction: Thyroid carcinomas are classified according to their histological subtypes, namely: papillary thyroid carcinoma (PTC), follicular thyroid carcinoma (FTC), medullar y carcinoma, undifferentiated carcinoma and poorly differentiated carcinoma. PTC usually spread to the lymph node which can be the presenting complaint, whereas FTC tends to have distant metastasis owing to its propensity of hematogenous spread. Differentiated thyroid carcinomas (DTC) such as papillary thyroid carcinoma (PTC) and follicular thyroid carcinoma (FTC) have a better prognosis compare to medullary and undifferentiated types. FTC constitutes around 10 to 25% of thyroid malignancies. Despite of its rarity compared to PTC, FTC tends to have distant metastases to lungs and bones. Usually long bones such as femur are more affected. Metastases to the skull and skull base are rare with only few reported cases. We report a case of temporal bone metastasis in an asymptomatic follicular thyroid carcinoma, which was detected on Iodine-131 (131I) scan and characterized on single-photon emission computed tomography/ computed tomography (SPECT/CT) scan.Conclusion: Temporal bone is a rare metastatic site of FTC. Early detection and prompt treatment play a vital role in patients’ survival and reducing the metastatic risk. In post total thyroidectomy patients, post ablation 131I whole body scan with SPECT/CT and serum thyroglobulin correlation is essential in detection of distant metastasis in asymptomatic patients.International Journal of Human and Health Sciences Supplementary Issue: 2019 Page: 42

2010 ◽  
Vol 25 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Huasheng Liang ◽  
Yuhua Zhong ◽  
Zuojie Luo ◽  
Yu Huang ◽  
Huade Lin ◽  
...  

Early diagnosis and treatment of thyroid cancers are critical for better prognosis and better survival rates. The purpose of this study was to identify potential diagnostic markers for papillary thyroid carcinomas with distant metastasis. Fifty-eight papillary thyroid tumor specimens (27 papillary thyroid carcinomas with distant metastasis and 31 without metastasis) were examined, and protein expression of pituitary tumor-transforming gene (PTTG), E-cadherin, p27kip1, vascular endothelial growth factor (VEGF)-C, metalloproteinase (MMP) 2, MMP9, chemokine receptor CXCR4, and basic fibroblast growth factor (bFGF) in these tumors was assessed by immunohistochemistry. The clinicopathological variables with diagnostic significance were determined by multivariate analysis, and their diagnostic values were evaluated by ROC curve analysis. PTTG, VEGF-C, MMP2, MMP9, CXCR4, and bFGF were overexpressed in metastatic papillary thyroid carcinomas, whereas p27kip1 expression was elevated only in carcinomas lacking metastasis. Multiple-factor binary ordinal logistic regression analysis revealed that PTTG, VEGF-C, MMP2, and bFGF were independently related to biological metastatic behavior in thyroid tumors, suggesting their potential use as biomarkers. ROC curve analysis showed that among these four proteins, VEGF-C and bFGF were the best diagnostic biomarkers. A VEGF-C and bFGF cluster was the most useful factor for the differential diagnosis between metastatic and non-metastatic papillary thyroid cancers. Thus, the combined use of VEGF-C and bFGF as biomarkers may improve the diagnostic accuracy of papillary thyroid carcinoma and may be useful in multimodal screening programs for the clinical diagnosis of papillary thyroid carcinoma and early detection of papillary thyroid carcinoma with distant metastasis.


Author(s):  
Alexa Clark ◽  
Marosh Manduch ◽  
Russell Hollins ◽  
Sara Awad

Summary We report a case of metastatic papillary thyroid carcinoma presenting with a recurrent right-sided cervical lymph node necrotic cyst. A 55-year-old woman presented with a 3-month history of a right-sided upper neck mass following an upper respiratory tract infection. Past medical history includes a right-sided nephrectomy secondary to a benign renal tumor and hypertension. She was evaluated by Otolaryngology, and fine-needle aspiration was performed. The mass recurred 2 months following aspiration. Ultrasound of the neck showed a 2.2 × 1.4 × 1.9 cm right cervical lymph node with a small fatty hilum but a thickened cortex. Neck computed tomography (CT) scan showed a well-defined 2.3 cm mass in the right upper neck corresponding to a necrotic cervical lymph node at level IIA. It also revealed a 7 mm calcified left thyroid nodule. Cytology revealed a moderate collection of murky fluid with mildly atypical cells presumed to be reactive given the clinical history of infection. The cyst had re-grown 2 months following aspiration. Excisional biopsy was performed and revealed metastatic classic papillary thyroid carcinoma (PTC). Subsequently, a total thyroidectomy and right neck dissection was performed. Pathology confirmed metastatic unifocal classic PTC of the right thyroid lobe and two lymph node metastases out of a total of 17 resected lymph nodes. The patient underwent radioactive iodine ablation. Subsequent I-131 radioiodine whole-body scan showed no evidence of metastases. In conclusion, metastatic PTC should be considered in the differential diagnosis of a recurrent solitary cystic cervical lymph node. Learning points: Metastatic PTC should be considered in the differential diagnosis of a recurrent solitary cystic cervical lymph node. A dedicated thyroid ultrasound is the preferred modality for identifying thyroid lesion over computed tomography. There is a risk of non-diagnostic cytology following FNA for cystic neck lesions, largely predicted by the cyst content of the nodule.


Author(s):  
Fernando Garcia Perez ◽  
Guillermo Martinez de Pinillos Gordillo ◽  
Mariana Tome Fernandez-Ladreda ◽  
Eyvee Arturo Cuellar Lloclla ◽  
Jose Alvaro Romero Porcel ◽  
...  

Author(s):  
Jibril Yahya Hudise ◽  
Khalid Ali Alshehri ◽  
Saad Nasser Alqarni ◽  
Yara Assiri ◽  
Ashwaq Asiri ◽  
...  

<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">Thyroid nodules are common in the general population, especially in women. Non palpable nodules are often found when patients undergo diagnostic imaging such as ultrasonogra­phy and computed tomography of the chest and neck. This retrospective study to assess the Prevalence of thyroid malignancy in thyroid nodule related to gender, age, and pathology, in Aseer Central Hospital KSA. </span></p><p class="abstract"><strong>Methods:</strong> <span lang="EN-IN">During a 5-year period (2011–2016), the medical records of 319 patients with thyroid nodules were collected from the department of pathology at Aseer Central Hospital KSA. The cases were reviewed for data on gender, age, and the pathological result. All patients underwent hemi or total thyroidectomy. Comparisons between genders, age groups, and tissue origins were performed. All statistical tests were performed with SPSS software.  </span></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">Over a period of 5 years, a total of 319 patients: male 17.2% and female 82.8% Underwent for hemi or total thyroidectomy. The age of presentation was ranging from 14 to 80 years. Among the 319 cases of thyroid nodules 73.7% were benign nodules and 26.3% malignant nodules. Papillary thyroid carcinoma in 72.6%, follicular thyroid carcinoma 10.6%, Hurthle cell carcinoma 4.8%, anaplastic carcinoma 4.8%, thyroid lymphoma 4.8% and medullary thyroid carcinoma in 2.4%. </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">Thyroid nodule is a common clinical problem and the proportion of such nodules that prove to be malignant is not small, investigations are of immense help to corroborate with the clinical and morphological finding. Papillary thyroid carcinoma most common malignant thyroid carcinoma followed by follicular thyroid carcinoma, hurthel cell carcinoma, anaplastic thyroid carcinoma, lymphoma and finally medullary thyroid Carcinoma. No significant different between male and female as risk factors for malignancy.</span></p>


2020 ◽  
Vol 6 (5) ◽  
pp. e273-e278
Author(s):  
Ruey Hu ◽  
George Xu ◽  
Thomas Stricker ◽  
Bingshan Li ◽  
Vivian L. Weiss ◽  
...  

Objective: Here we present 2 cases of papillary thyroid microcarcinomas (PMCs) that had metastasized at presentation. The 2015 American Thyroid Association and the American College of Radiology Thyroid Imaging Reporting and Data System (TI-RADS) criteria do not recommend biopsy of the majority of subcentimeter thyroid nodules, as PMCs are mostly indolent with excellent prognosis. However, the paradigm of active surveillance presents a conundrum on how to identify the rare patient with distant metastatic disease while avoiding unnecessary intervention in the majority. Methods: After initial discovery of incidental lesions on chest computed tomography, core or wedge biopsies of the lung lesion were performed. Thyroid nodules on ultrasound were classified by TI-RADS. Tumor DNA was sequenced, annotated, filtered on 119 known cancer genes, and filtered for variants with an exome allele frequency of <0.001. Results: A 70-year-old woman and a 29-year-old woman presented with incidental pulmonary lesions on computed tomography scan. Lung biopsy revealed lung metastases from papillary thyroid carcinoma. The thyroid nodules in both patients were TI-RADS 3 and American Thyroid Association low-suspicion. Molecular testing showed a c.1721C>G mutation (p.Thr574Ser) in the TSHR gene in patient 1 and a codon 61 mutation in the NRAS gene in patient 2. Both patients were iodine-avid, with complete structural remission in one patient and ongoing treatment with evidence of structural response in the other. Conclusion: The 2 presentations demonstrate unexpected and concerning behavior of PMCs. Both thyroid tumors were subcentimeter in diameter, meaning they would have escaped detection using traditional risk-stratification algorithms in active surveillance. Further knowledge of tumor genetics and microenvironment may assist in predicting tumor behavior in PMCs.


Author(s):  
Jia-wei LI ◽  
Cai Chang ◽  
Jia-ying Chen ◽  
Zhao-ting Shi ◽  
Min Chen

Background: To compare the abilities of ultrasonography (US) and Computed Tomography (CT) to identify calcifications and to predict probability of malignancy for Papillary Thyroid Carcinoma (PTC) and Papillary Thyroid Microcarcinoma (PTMC). Methods: We reviewed 1008 cases of PTC/PTMC with calcifications reported by pre-operative US, CT, or post-operative pathology. The size of the thyroid nodule was obtained from the US report and the maximum diameter (d) was documented. According to the nodule size (d), the PTC and PTMC groups were each divided into two subgroups, as follows: large PTC group (d ≥ 2 cm), small PTC group (1 cm < d < 2 cm), large PTMC group (0.6 cm ≤ d ≤ 1 cm), and small PTMC group (d < 0.6 cm). Results: In the 1008 patients, the ratio of females to males was 2.29 and the mean age was 40.9 years (standard deviation: 11.7 years). Of the 1008 records, 92.8% were found to have calcifications according to the US report, while 50.4% showed calcifications according to the CT report. This difference between US and CT reports was statistically significant (p < 0.0005). The percentages of US reports showing calcifications were similar for all four PTC and PTMC subgroups (93.7%, 94.3%, 92.1%, and 85.1%, respectively; p = 0.052), while the percentages of CT reports showing calcifications were significantly different among the PTC and PTMC subgroups (62.3%, 52.2%, 45.4%, and 31.3%, respectively; p < 0.0005). As for the prediction of malignancy, US was superior to CT in all four subgroups (large PTC group: 97.1% vs. 54.1%, small PTC group: 94.8% vs. 42.9%, large PTMC group: 97.2% vs. 32.0%, small PTMC group: 95.5% vs. 14.9%; p < 0.0005 for all pairwise comparisons). No significant difference was observed in terms of the ability of US to predict the malignancy of PTC versus PTMC (p = 0.31), while CT showed significant superiority in diagnosing PTC versus PTMC (p < 0.0005). The predictive value of CT for PTC declined as the nodule size decreased (p < 0.05 for all pairwise comparisons). Conclusion: Our results showed that US detected calcifications and predicted the malignancy of all nodule sizes of thyroid papillary carcinoma equally well, while the performance of CT declined with the reduction of nodule size.


Sign in / Sign up

Export Citation Format

Share Document