Cardiophrenic lymph node metastasis in low-grade serous ovarian adenocarcinoma.

•Cardiophrenic lymph node metastasis in low-grade ovarian carcinoma is rare.•Two cases presented here identify clinical strategies needing further attention.•Low-grade disease is treated with surgery given high chemotherapeutic resistance.•Preoperative awareness of lymph node metastasis allows for optimal debulking.•Identifying radiologic evidence of distant metastasis improves patient outcomes.