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World J Gastrointest Oncol. Aug 15, 2023; 15(8): 1332-1341
Published online Aug 15, 2023. doi: 10.4251/wjgo.v15.i8.1332
Table 4 Hormone status and immunohistochemistry markers for patients with metastatic breast cancer to upper gastrointestinal tract
Esophagus (%)
Stomach (%)
Tumor receptors of primary breast tumor
    ER+4 (67)37 (88)
    ER-3 (50)5 (12)
    PRG+2 (33)29 (69)
    PRG-4 (67)12 (29)
    HER+0 (0)2 (5)
    HER-3 (50)23 (55)
Tumor receptors and markers of gastrointestinal metastases
    ER+13 (100)86 (57)
    ER--39 (26)
    PRG+9 (69)30 (20)
    PRG--18 (12)
    HER+1 (8)8 (5)
    HER-1 (8)38 (25)
    CK7+3 (23)25 (17)
    CK20+-1 (1)
    CK20-3 (23)18 (12)