LCT and hydrops fetalis: No differences in the NK cells, macrophages and neutrophils per ml were observed between LAC and HF effusions (NK: 2.65(1.30–6.33) × 103 cells/ml for LAC vs 5.58(1.06–13.55) × 103 cells/ml for HF; macrophages: 34.85(3.77–64.47) × 103 cells/ml for LAC vs 16.09(7.31–46.82) × 103 cells/ml for HF; neutrophils: 1.67(0.84–8.88) × 103 cells/ml for LAC vs 1.28(0.61–9.94) × 103 cells/ml for HF).