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Kang M, Kim NR, Seok JY. Non-papillary thyroid carcinoma diagnoses in The Bethesda System for Reporting Thyroid Cytopathology categories V and VI: An institutional experience. Ann Diagn Pathol 2024; 71:152263. [PMID: 38195259 DOI: 10.1016/j.anndiagpath.2023.152263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/25/2023] [Accepted: 12/26/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND The non-papillary thyroid carcinoma (PTC) subgroups of The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) categories V (Suspicious for malignancy) and VI (Malignant) are rare, and specific tumor typing is difficult. We aimed to analyze histologic outcomes and to investigate the points of caution. METHODS We reviewed the electronic database and identified 12,215 cases of thyroid fine-needle aspiration cytology between 2013 and 2022. In total, 2783 patients were diagnosed with TBSRTC V or VI. Of these, 51 patients with non-PTC diagnosis were identified. Histological outcomes were analyzed with the cytologic findings. RESULTS The subgroups of non-PTC diagnoses in TBSRTC category V or VI consisted of medullary thyroid carcinoma (MTC) (13/51, 25.5 %), anaplastic thyroid carcinoma (3/51, 5.9 %), lymphoma (2/51, 3.9 %), metastatic tumor (4/51, 7.8 %), and malignant, not otherwise specified (NOS) (29/51, 56.9 %). The concordance rate of the histological outcomes was 30 % (12/40), predominantly comprising MTC cases. The obscuring factors for specific tumor typing in the suspicious for malignancy/malignant NOS cytology diagnosis group was mixed pattern of well differentiated thyroid carcinoma and less differentiated carcinoma cells (9/24, 37.5 %), low cellularity (7/24, 29.2 %) and a history of non-thyroid organ malignancy (6/24, 25 %). The less differentiated carcinoma component in mixed pattern consisted of 2 poorly differentiated thyroid carcinomas, 2 anaplastic thyroid carcinomas, 4 high-grade PTCs and 1 high-grade MTC. CONCLUSION The high-grade feature of PTC or MTC cytology is a noteworthy obscuring factor in specific tumor typing of non-PTC cytology diagnosis.
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Affiliation(s)
- Myunghee Kang
- Department of Pathology, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Na Rae Kim
- Department of Pathology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Jae Yeon Seok
- Department of Pathology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Republic of Korea.
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Garneau M, Alyzadneh E, Lal G, Rajan Kd A. Metastatic Disease to a Concurrent Thyroid Neoplasm: A Case Series and Review of the Literature. Head Neck Pathol 2023; 17:447-459. [PMID: 36719557 PMCID: PMC10293528 DOI: 10.1007/s12105-022-01509-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/12/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Metastatic disease to the thyroid gland is uncommon but well-described. Metastatic disease to a concurrent primary thyroid neoplasm is a rare phenomenon. We sought to study patients with metastasis to the thyroid with a focus on the histopathologic and clinical features in tumor-to-tumor metastasis. METHODS We identified a series of patients with metastatic disease to the thyroid, with or without a concurrent primary neoplasm, through a search of the files of the Department of Pathology. All relevant slides were retrieved and reviewed, including routine HE and immunohistochemical stains. We performed a detailed English language literature search (1962-2022) and review to identify tumor-to-tumor metastasis involving the thyroid. RESULTS We identified 14 patients with metastasis to the thyroid over a 22-year period. Four patients exhibited papillary thyroid carcinoma, with metastatic spread of a different malignancy seeding into the thyroid cancer. We describe the histopathologic diagnostic process and findings, clinical management, and the clinical course of tumor-to-tumor metastasis in greater detail for these 4 patients. CONCLUSION Tumor-to-tumor metastasis to the thyroid is a rare event with unique histopathologic features. Our findings suggest that the phenomenon of tumor-to-tumor metastasis serves to highlight broader mechanisms of metastatic disease in general. We provide the largest-to-date and comprehensive review of the literature to identify all previous reported instances of tumor-to-tumor metastasis involving the thyroid.
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Affiliation(s)
- Michael Garneau
- University of Iowa Roy J. and Lucille A. Carver College of Medicine, 52242, Iowa City, IA, USA
| | - Eyas Alyzadneh
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA, 52242, USA
| | - Geeta Lal
- Department of Surgery, University of Iowa Hospitals and Clinics, 52242, IA, Iowa City, USA
| | - Anand Rajan Kd
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA, 52242, USA.
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Patrizio A, Ferrari SM, Stoppini G, Palmisano E, Elia G, Ragusa F, Paparo SR, Balestri E, Mazzi V, Botrini C, Proietti A, Famà F, Benvenga S, Antonelli A, Fallahi P. Thyroid Metastasis from Primary Breast Cancer. J Clin Med 2023; 12:jcm12072709. [PMID: 37048792 PMCID: PMC10095414 DOI: 10.3390/jcm12072709] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/15/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023] Open
Abstract
Breast cancer (BC), the most commonly diagnosed malignancy, frequently metastasizes to the bone, lungs, brain and liver at advanced stages, whereas the thyroid gland represents a rare target site for secondary disease. We examined the most recent literature about thyroid metastasis (TM) from BC after we encountered a peculiar case of a 71-year-old woman who developed sudden dysphagia, severe hypothyroidism and hypoparathyroidism due to TM 18 years after the diagnosis of her primary cancer. Based on published data, the prevalence of TM in BC ranges from 3% to 34%, with a median onset time of 48.2 months, although longer time intervals are not infrequent. TM negatively impacts the prognosis of these patients, however thyroid surgery can limit the local disease burden. Therefore, we suggest that clinicians involved in the follow-up care of BC patients should consider a differential diagnosis of secondary thyroid malignancy when incidental lesions are diagnosed during radiological evaluations or local symptoms affect the cervical region, even many years after the diagnosis of the primary cancer.
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Affiliation(s)
- Armando Patrizio
- Department of Emergency Medicine, Azienda Ospedaliero-Universitaria Pisana, 56124 Pisa, Italy
| | | | - Giulio Stoppini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
| | - Elena Palmisano
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
| | - Giusy Elia
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Francesca Ragusa
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Sabrina Rosaria Paparo
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Eugenia Balestri
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Valeria Mazzi
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Chiara Botrini
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Agnese Proietti
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Fausto Famà
- Department of Human Pathology in Adulthood and Childhood “G. Barresi”, University Hospital “G. Martino”, 98125 Messina, Italy
| | - Salvatore Benvenga
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
- Master Program on Childhood, Adolescent and Women’s Endocrine Health, University of Messina, 98125 Messina, Italy
- Interdepartmental Program of Molecular and Clinical Endocrinology and Women’s Endocrine Health, Azienda Ospedaliera Universitaria Policlinico “G. Martino”, 98125 Messina, Italy
| | - Alessandro Antonelli
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy
| | - Poupak Fallahi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
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