Online Journal
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Journal of Medical Ultrasonics

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1994 - Vol.21

Vol.21 No.04

Original Article(原著)

(0181 - 0189)


Correlation between the Ultrasonographic and Pathohistologic Characteristics of Papillary Carcinoma of the Thyroid

山田 薫1, 矢田 宏2, 金澤 暁太郎2, 谷口 信行3, 斉藤 寿一1, 伊東 紘一3

Kaoru YAMADA1, Hiroshi YATA2, Kyotaro KANAZAWA2, Nobuyuki TANIGUCHI3, Toshikazu SAITO1, Kouichi ITOH3

1自治医科大学内分泌代謝科, 2自治医科大学消化器一般外科, 3自治医科大学臨床病理

1Department of Endocrinology and Metabolism Jichi Medical School, 2Department of General Surgery Jichi Medical School, 3Department of Clinical Pathology Jichi Medical School

キーワード : Calcification, Papillary carcinoma, Psammoma body, Thyroid, Ultrasonography

We studied 81 consecutive cases of papillary carcinoma in surgically removed thyroid glands to elucidate the correlation between their ultrasonographic and pathohistologic characteristics. The tumor parenchyma in 71.6% of these cases contained hyperechoic structures, most of which were minute spots, some with and some without attenuation, that corresponded well with the psammoma bodies observed on histologic examination. The larger spots were assumed to be coarse calcification in necrotic tissue. Dense hyalinized fibrosis in tumor parenchyma also produced intense reflection that caused hyperluminous spots. These hyperechoic structures show a higher incidence of lymphnode or intraglandular metastasis. Most papillary carcinomas of the thyroid were hypoechoic. In the pure follicular variant of this type of cancer, the foci and the associated predominant follicular structures were more echoic than were purely papillary carcinomas. Thus ultrasonographic methods were not always able to diagnose papillary carcinoma of the thyroid.