Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学检查，病变具有广泛的粘液样变、囊腔形、血管壁透明变性和缺乏核分裂相等特点。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高显微镜检查，标本显示无图案的“组织培养样”表现，伴有大量有丝分裂和红细胞外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学检查，病变具有广泛的粘液样变、囊腔形成、血管壁透明变性和缺乏核分裂相等特点。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高显微镜检查，标本显示无图案的“组织培养样”表现，伴有大量有丝分裂和红细胞外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学检，病变具有广泛的粘液样变、囊腔形成、血管壁透明变性和缺乏核分特点。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高显微镜检，显示无图案的“组织培养样”表现，伴有大量有丝分和红细胞外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学，病变具有广泛的粘液样变、囊腔形成、血管壁透明变性和缺乏核分裂相。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高显微，标本显示无图案的“组织培养样”表现，伴有大量有丝分裂和红细胞外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学查，病变具有广泛的粘液样变、囊腔形成、血管壁透明变性和缺乏核分裂相等。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

2B，高显查，标本显示无案的“组织培养样”表现，伴有大量有丝分裂和红细胞外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学检查，病变有泛的粘液样变、囊腔形成、血管壁透明变性和缺乏核分裂相等特点。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高显微镜检查，标本显示无图案的“组织培养样”表现，伴有大量有丝分裂和外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学检查，病变具有广泛的粘液样变、囊腔形成、血管壁透明变性和缺裂相等特点。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高微镜检查，标本图案的“组织培养样”表现，伴有大量有丝裂和红细胞外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学检查，病变具有广泛的粘液样变、囊腔形成、血管壁透明变性和缺乏核裂相等特点。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高显微镜检查，标本显示无图案的“组织培养样”表现，伴有大量有裂和红细胞外渗。

Histologically, the tumors were characterized by widespread myxoid, cyst formation, vessel wall hyalinization, and absence of mitoses.

组织学检查，病变有泛的粘液样变、囊腔形成、血管壁透明变性和缺乏核分裂相等特点。

Figure 2.B, On high-power magnification microscopy, the specimen showed a patternless tissue culture-like appearance with multiple mitoses and extraasated red blood cells.

图2B，高显微镜检查，标本显示无图案的“组织培养样”表现，伴有大量有丝分裂和外渗。