低分化甲状腺癌（PDTC）是一种罕见的甲状腺癌，由滤泡上皮细胞发展而来。在形态和预后方面，PDTC介于高分化甲状腺癌（WDTC）和未分化甲状腺癌（ATC）之间。源自滤泡的恶性甲状腺肿瘤范围从一端的致命 ATC 到另一端的惰性 WDTC。我们介绍了一名 19 岁女性患者的病例，主诉右侧颈部肿胀。计算机断层扫描显示甲状腺右叶内存在实性囊性病变。 PDTC的诊断是通过组织病理学检查做出的。在本例中，我们评估了甲状腺右叶的组织学特征，并提交了一份年轻女性 PDTC 病例报告。版权所有 © 2024，Chavhan 等人。

Poorly differentiated thyroid carcinoma (PDTC) is a rare type of thyroid carcinoma that develops from follicular epithelial cells. In terms of morphology and prognosis, PDTC falls between well-differentiated thyroid carcinoma (WDTC) and anaplastic thyroid carcinoma (ATC). The spectrum of malignant thyroid tumors originating from follicles ranges from the fatal ATC at one end to the indolent WDTC at the other. We present a case of a 19-year-old female patient complaining of swelling on the right side of the neck. Computed tomography revealed a solid cystic lesion within the right lobe of the thyroid gland. The diagnosis of PDTC was made through histopathological examination. In this case, we evaluated the histological characteristics of the right lobe of the thyroid gland and presented a case report of PDTC in a young female.Copyright © 2024, Chavhan et al.