Patient Characteristics and Patterns of Surgical Interventions in Patients of Differentiated Thyroid Cancer with Distant Metastasis

Introduction The rates of thyroid cancers are on a rise, especially well-differentiated thyroid cancers. This could be partly due to newer diagnostic modalities, like high-resolution ultrasound, that can pick up smaller lesions. Differentiated thyroid cancers with distant metastases are not common, and even rarer is the initial presentation with complaints not related to the neck. Objectives The objective of this series was to study and report the unusual cases of patients with differentiated thyroid cancer with distant metastasis. There is a lack of data in the literature on these cases, and due to the rarity of such metastases, no definite treatment protocol has been defined. Methods A retrospective chart review of 1,200 cases of thyroid surgeries was performed. A total of 10 cases of well-differentiated thyroid cancer on the final histopathology exam that had initially presented with usual complaints to departments other than the Otolaryngology Department were identified. Results A total of 6 patients had papillary carcinoma, whereas 4 patients had follicular carcinoma on final the histopathology exam. Two patients presented with iliac crest lesions, 2 with vertebral lesions one each with parapharyngeal mass, supraclavicular mass, labia majora swelling and bleeding, lung, rib and neck of femur lesion. Conclusion There are still no specific guidelines on how to address these patients with differentiated thyroid cancer with distant metastasis (except for the cases of bone and lung lesions) and on which treatment should be offered in case of recurrence. More studies on the subject are required.

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Clinical course and outcome of differentiated thyroid cancer patients with pregnancy after diagnosis of distant metastasis

10.21203/rs.3.rs-800597/v1 ◽

2021 ◽

Author(s):

Haruhiko Yamazaki ◽

Kiminori Sugino ◽

Jaeduk Yoshimura Noh ◽

Ryohei Katoh ◽

Kenichi Matsuzu ◽

...

Keyword(s):

Thyroid Cancer ◽

Cancer Patients ◽

Distant Metastasis ◽

Differentiated Thyroid Cancer ◽

Clinical Course ◽

Progression Free Survival ◽

Good Survival ◽

Live Births ◽

Comparator Group

Abstract Purpose There is no sufficient data about the clinical course and outcome in thyroid cancer patients who become pregnant after diagnosis of distant metastasis (DM). The current study was conducted to collect information regarding the clinical and reproductive characteristics, and outcomes in thyroid cancer patients who became pregnant after being diagnosed with DM. Methods Records of 125 differentiated thyroid cancer (DTC) patients with age ≤ 45 years at DM diagnosis who had visited Ito Hospital from January 2005 to June 2021 were retrospectively reviewed. Among those 125 patients, 28 who became pregnant after DM diagnosis were classified as pregnant group, and the remained 97 patients were classified as comparator group. Results In pregnant group, the median age at malignancy diagnosis, DM diagnosis, and first pregnancy after DM diagnosis was 25 years (range, 4–41 years), 27 years (range, 11–41 years), and 32 years (range, 25–45 years), respectively. Fifty-five pregnancies and 40 live births were reported. Three patients had live births by embryo transfer. Other pregnancy outcomes were miscarriage (n = 14) and induced abortion (n = 1). No one died during the follow-up period in this study. The 10-year progression free survival (PFS) rates of pregnant and comparator group were 92.1% and 74.4%, respectively. Conclusion DTC patients who became pregnant after DM diagnosis had good survival. Our results add to the information required for counseling thyroid cancer patients who have concerns about their fertility in the future.

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