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Treatment of medullary thyroid carcinoma with apatinib: A case report and literature review.

ABSTRACT: Medullary thyroid carcinoma (MTC) is a rare type thyroid carcinoma originating from the thyroid parafollicular cells (C cells). Chemotherapy has a limited efficacy for treating persistent or recurrent MTC.A 46-year-old woman who underwent thyroidectomy for MTC in December 2007. She began experience recurring diarrhea in January 2015 and started to cough and feel shortness of breath in March 2016.A chestcomputed tomography (CT) scan showed metastases in the bilateral lungs, pulmonary hilum, and mediastinal lymph nodes. Percutaneous biopsy of the pulmonary occupying lesions performed on March 21, 2016 indicated medullary carcinoma metastases at the right pulmonary hilum.This patient was treated with oral apatinib (500?mg daily).The patient's symptoms of diarrhea, coughing, and shortness of breath disappeared. CT reexaminations for efficacy assessment at 1, 2, and 3 months after the treatment indicated partial remission. Systemic migrating bone and joint pains occurred during the treatment, which were considered to be adverse events of apatinib.Treatment of MTC with apatinib has been shown to be effective in our case. Tyrosine kinase inhibitors (TKIs) that suppress rearranged during transfection (RET) and vascular endothelial growth factor receptor (VEGFR) should be considered as a effective therapeutic approaches.

SUBMITTER: Cai S

PROVIDER: S-EPMC5815675 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Treatment of medullary thyroid carcinoma with apatinib: A case report and literature review.

Cai Sina S Deng Huan H Chen Yinkui Y Wu Xing X Guan Xiaoqian X

Medicine 20171201 50

<h4>Rationale</h4>Medullary thyroid carcinoma (MTC) is a rare type thyroid carcinoma originating from the thyroid parafollicular cells (C cells). Chemotherapy has a limited efficacy for treating persistent or recurrent MTC.<h4>Patient concerns</h4>A 46-year-old woman who underwent thyroidectomy for MTC in December 2007. She began experience recurring diarrhea in January 2015 and started to cough and feel shortness of breath in March 2016.<h4>Diagnoses</h4>A chestcomputed tomography (CT) scan sho ...[more]

PMID: 29390263

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Project description:Pycnodysostosis is a rare autosomal recessive skeletal dysplasia caused by a mutation in the cathepsin K encoded by cathepsin K gene (CTSK). Medullary thyroid carcinoma (MTC) is also a relatively rare type of primary thyroid carcinoma.A 31-year-old woman presenting a short stature and a palpable nodule in the front of her neck that had gradually increased in size during the last 2 years was referred to our department. She has experienced multiple fractures at lower limbs in the last 2 decades.The patient's clinical examination revealed short stature, underweight, a prominent forehead, stubby fingers, and a fixed nodule in the right thyroid lobe. Intraoral examination revealed multiple clinically malposed and missing teeth, as well as chronic periodontitis with a narrow and grooved palate. Radiographic examination revealed typical widely separated cranial sutures and an open anterior/posterior fontanel with an obtuse gonial angle, acroosteolysis, and osteosclerosis with narrowed medullary cavities. Ultrasonography of the thyroid gland showed a marked hypoechoic solid nodule in the right lobe in which tumor cell clusters were confirmed by ultrasound-guided fine needle aspiration biopsy and was suspected to be MTC. Laboratory tests revealed dramatically elevated serum calcitonin >2000?pg/L (reference range: 0-5?pg/L) and carcinoembryonic antigen (CEA) 134.37?ng/mL (reference range: 0-5?ng/mL). Genotypic screening revealed compound heterozygous mutations in the CTSK gene (c.158delA, P.Asn53Thr/c.C830T, P.Ala277Val) but no mutation associated with the familial forms of MTC.The patient underwent a total thyroidectomy with right-sided functional neck dissection.CEA and serum calcitonin decreased significantly postthyroidectomy, and no further fracture has been reported by the patient so far.The present study is the first to report a rare case of the coexistence of pycnodysostosis with a compound CTSK gene mutation and sporadic MTC. Radiological techniques and gene analysis play key roles in the definitive diagnosis.

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Treatment of medullary thyroid carcinoma with apatinib: A case report and literature review.

Publications

Treatment of medullary thyroid carcinoma with apatinib: A case report and literature review.

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