INTRODUCTION Metastasis of sarcomas to lymph nodes is an uncommon event in its natural history. We aimed to present our experience with fine-needle aspiration (FNA) of metastatic sarcomas to lymph nodes over a 10-year period. MATERIAL AND METHODS The cytopathology archives were searched for FNA of lymph nodes involved by metastatic sarcomas. Available clinicopathologic data were recorded. All slides were retrieved and reviewed. RESULTS Thirty-three lymph nodes, from 30 patients, with metastatic soft tissue sarcomas were identified. The lymph node metastases occurred in 16 males and 14 females (median age, 56 years). The size of the lymph nodes ranged from 1.2 to 7.5 cm (median size, 2.9 cm). The inguinal lymph nodes were the most commonly involved nodes, followed by thoracic and cervical neck nodes. The most common metastatic soft tissue sarcoma encountered was Kaposi sarcoma (n = 7, 23.3%), followed by angiosarcoma (n = 6, 20%) and rhabdomyosarcoma (n = 6, 20%). The most common site of primary soft tissue sarcoma was the head and neck (n = 8, 26.6%), followed by lower extremity (n = 7, 23.3%). The initial diagnosis of sarcoma was established in 6 cases. Seventen patients had metachronous involvement of lymph nodes, while the remaining patients had synchronous involvement. Seventen patients died of disease, and the survival after lymph node metastasis ranged from 1 to 43 months. CONCLUSION FNA is an accurate and effective method in the diagnosis of metastatic sarcoma to lymph nodes. Knowledge of clinical findings and primary tumor diagnosis along with careful assessment of the cytomorphology is extremely helpful for an accurate diagnosis of metastases.

中文翻译：

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转移至淋巴结的肉瘤的细针抽吸：一项为期 10 年的细胞形态学研究。

引言 肉瘤转移至淋巴结在其自然史中是罕见的事件。我们的目的是展示我们 10 年来对淋巴结转移性肉瘤进行细针抽吸 (FNA) 的经验。材料和方法 在细胞病理学档案中检索转移性肉瘤所累及淋巴结的 FNA。记录可用的临床病理数据。所有幻灯片均已检索并审查。结果 30 名患者的 33 个淋巴结被鉴定为转移性软组织肉瘤。发生淋巴结转移的男性16例，女性14例（中位年龄56岁）。淋巴结大小为 1.2 至 7.5 厘米（中位大小为 2.9 厘米）。腹股沟淋巴结是最常受累的淋巴结，其次是胸颈部淋巴结。最常见的转移性软组织肉瘤是卡波西肉瘤（n = 7，23.3%），其次是血管肉瘤（n = 6，20%）和横纹肌肉瘤（n = 6，20%）。原发性软组织肉瘤最常见的部位是头颈部（n = 8，26.6%），其次是下肢（n = 7，23.3%）。6例初步诊断为肉瘤。70 例患者淋巴结异时受累，其余患者同步受累。70名患者死于疾病，淋巴结转移后生存期为1至43个月。结论FNA是诊断淋巴结转移肉瘤准确、有效的方法。了解临床表现和原发肿瘤诊断以及仔细评估细胞形态学对于准确诊断转移瘤非常有帮助。