PMC8322726_01
(A, B) Hematoxylin and eosin staining; magnification x100 and x200, Duct cells are observed in the loose stroma. (C, D) Hematoxylin and eosin staining; magnification x100 and x200, Urachal mucinous adenocarcinoma, groups of tumour cells surrounded by extracellular mucin.
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The patient immediately underwent a transurethral biopsy of the urachal tumor, which revealed a 3.0x2.0x3.0 cm adenocarcinoma and some mucinous adenocarcinoma ( Figure 1 ).
Timeline of the Serum marker.
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After 6 cycles, a 50% reduction in the size of the metastatic lung lesions was observed by CT and the CEA decreased from 588.1 to 205.7 ng/ml ( Figure 2 ).