Kimoto Takeo, Kohno Norio, Okamoto Akiko, Ota Kyosuke, Tani Takafumi, Kondo Takeshi, Nishio Mari
Department of Surgery, Kobe Kaisei Hospital, 3-11-15 Nada-ku-Shinoharakita-machi, Kobe, Hyogo, 657-0068, Japan.
Department of Breast Surgery, Saiseikai Nakatsu Hospital, 2-10-39 Kita-ku-Shibata, Osaka, 530-0012, Japan.
Surg Case Rep. 2021 Apr 20;7(1):99. doi: 10.1186/s40792-021-01181-z.
Breast cancer is well known to tends to invade through the lymphatic chains mainly to the axillary and subclavian nodes or occasionally to the internal mammary nodes. However, inguinal lymph node metastasis from breast cancer is extremely rare.
We have experienced a case of an 82-year-old woman showing left inguinal lymph node metastases from right breast cancer. Previously, she had received five times abdominal operations and left artificial bone head replacement for metamorphous hip-joint disease. Although the metastases were firstly detected 46 months after the breast surgery, they had already existed at the time of the breast operation, which was retrospectively re-evaluated by CT examination. The progression pattern of inguinal lymph node metastases had much correlated with that of the breast cancer. She underwent inguinal lymph node dissections. Pathological findings revealed them being compatible with breast cancer origin.
This is the sixth case having been reported in English literature. Besides, this is the first case showing the contralateral spread to the primary breast cancer. One of the causes of this complex metastatic pattern is thought be ascribed to the previously performed prolific abdominal operations.
众所周知，乳腺癌往往通过淋巴链主要转移至腋窝和锁骨下淋巴结，偶尔转移至乳内淋巴结。然而，乳腺癌发生腹股沟淋巴结转移极为罕见。
我们遇到一例82岁女性，出现右乳腺癌左腹股沟淋巴结转移。此前，她因变形性髋关节疾病接受过5次腹部手术及左人工股骨头置换术。尽管转移灶在乳腺癌手术后46个月首次被发现，但通过CT检查回顾性重新评估发现，在乳腺癌手术时转移灶就已存在。腹股沟淋巴结转移的进展模式与乳腺癌密切相关。她接受了腹股沟淋巴结清扫术。病理结果显示这些转移灶符合乳腺癌起源。
这是英文文献中报道的第6例。此外，这是首例原发性乳腺癌出现对侧转移的病例。这种复杂转移模式的原因之一被认为与先前进行的多次腹部手术有关。
