Dynamic esophageal manometry reveals pseudoachalasia secondary to metastatic breast cancer: A case report

Figure 4 Pathological findings. A: Hematoxylin and eosin (HE) staining at 200 × magnification revealed invasive lobular carcinoma of the breast, with visible lymphovascular tumor emboli and neural invasion; B: Immunohistochemical staining for HER2 in lymph nodes. Out of 23 Lymph nodes examined, cancer was present in 22, HER2(+); C: Cardia puncture tissue pathological HE staining at 200 × magnification: In the fibrous tissue, tumor is observed, which has the same morphological characteristics as the tumor found in the breast tissue section that was resected and examined in January 2016; D: Immunohistochemical staining for GATA3, confirming the metastatic origin of the tumor from the breast. The findings are consistent with the metastatic spread of lobular carcinoma of the breast.