Macrofollicular variant of papillary thyroid carcinoma with extensive lymph node metastases. 2014

Min-kyung Yeo, and Ja Seong Bae, and Woo Jin Oh, and Gyeong Sin Park, and Chan Kwon Jung
Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, 222 Banpodaero, Seocho-gu, Seoul, 137-701, Republic of Korea.

The macrofollicular variant of papillary thyroid carcinoma is a rare subtype of the follicular variant of papillary thyroid carcinoma and is usually characterized by an indolent clinical course. The tumors are prone to be misdiagnosed as benign due to their macrofollicular architecture and bland cytologic features. We report a rare case of the macrofollicular variant of papillary thyroid carcinoma with extensive lymph node metastases. The patient was a 48-year-old female with a right thyroid nodule and multiple enlarged lymph nodes in the right neck. It was not possible to make a definitive diagnosis of malignancy on fine-needle aspiration cytology and intraoperative frozen section. She underwent total thyroidectomy with right modified radical neck dissection. The surgical specimen showed a 2.5 × 1.5 × 10 cm, well-circumscribed macrofollicular variant of papillary thyroid carcinoma in the right lobe and multiple central and right lateral neck lymph node metastases. Molecular testing for BRAF, NRAS, HRAS, and KRAS was all negative. We then reviewed the demographic and clinicopathologic characteristics of 71 patients with the macrofollicular variant of papillary thyroid carcinoma. The cytologic or histopathologic diagnosis of macrofollicular variant of papillary thyroid carcinoma can be difficult. Extensive lymph node metastases caused by the macrofollicular variant of papillary thyroid carcinoma may occur even in the absence of capsular or lymphovascular invasion. This review will help to better understand the nature of the macrofollicular variant of papillary thyroid carcinoma.

UI MeSH Term Description Entries
D008207 Lymphatic Metastasis Transfer of a neoplasm from its primary site to lymph nodes or to distant parts of the body by way of the lymphatic system. Lymph Node Metastasis,Lymph Node Metastases,Lymphatic Metastases,Metastasis, Lymph Node
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013961 Thyroid Gland A highly vascularized endocrine gland consisting of two lobes joined by a thin band of tissue with one lobe on each side of the TRACHEA. It secretes THYROID HORMONES from the follicular cells and CALCITONIN from the parafollicular cells thereby regulating METABOLISM and CALCIUM level in blood, respectively. Thyroid,Gland, Thyroid,Glands, Thyroid,Thyroid Glands,Thyroids
D013964 Thyroid Neoplasms Tumors or cancer of the THYROID GLAND. Cancer of Thyroid,Thyroid Cancer,Cancer of the Thyroid,Neoplasms, Thyroid,Thyroid Adenoma,Thyroid Carcinoma,Adenoma, Thyroid,Adenomas, Thyroid,Cancer, Thyroid,Cancers, Thyroid,Carcinoma, Thyroid,Carcinomas, Thyroid,Neoplasm, Thyroid,Thyroid Adenomas,Thyroid Cancers,Thyroid Carcinomas,Thyroid Neoplasm
D044963 Biopsy, Fine-Needle Using fine needles (finer than 22-gauge) to remove tissue or fluid specimens from the living body for examination in the pathology laboratory and for disease diagnosis. Aspiration Biopsy, Fine-Needle,Fine Needle Biopsy,Fine-Needle Aspiration,Aspiration Biopsies, Fine-Needle,Aspiration Biopsy, Fine Needle,Aspiration, Fine-Needle,Aspirations, Fine-Needle,Biopsies, Fine Needle,Biopsies, Fine-Needle,Biopsies, Fine-Needle Aspiration,Biopsy, Fine Needle,Biopsy, Fine-Needle Aspiration,Fine Needle Aspiration,Fine Needle Biopsies,Fine-Needle Aspiration Biopsies,Fine-Needle Aspiration Biopsy,Fine-Needle Aspirations,Fine-Needle Biopsies,Fine-Needle Biopsy,Needle Biopsies, Fine,Needle Biopsy, Fine
D018265 Carcinoma, Papillary, Follicular A thyroid neoplasm of mixed papillary and follicular arrangement. Its biological behavior and prognosis is the same as that of a papillary adenocarcinoma of the thyroid. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1271)
D037981 Neck Dissection Dissection in the neck to remove all disease tissues including cervical LYMPH NODES and to leave an adequate margin of normal tissue. This type of surgery is usually used in tumors or cervical metastases in the head and neck. The prototype of neck dissection is the radical neck dissection described by Crile in 1906. Radical Neck Dissection,Dissection, Neck,Dissection, Radical Neck,Dissections, Neck,Dissections, Radical Neck,Neck Dissection, Radical,Neck Dissections,Neck Dissections, Radical,Radical Neck Dissections

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