PMC5126029_01
a, b Histopathological examination of the lymph nodes in the right axillary region. Hematoxylin and eosin stain (H & E stain), 40x magnification
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Fig1
Preoperative pathological examination confirmed it as a metastatic adenocarcinoma through regional lymph node resection (Fig. 1).
Abdominal CT scan: umbilicus lump (arrow), which was suspected to be an umbilicus tumor
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Fig2
The lesion measured approximately 2.8 x 2.0 cm (Fig. 2).
CT scan: postoperative changes of lymph nodes in the right axillary area (arrow). The density of soft tissue around this structure was increased
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Fig3
Several lymph nodes were palpable in the right axillary area (Fig. 3).
The PET-CT scan: umbilicus lump (arrow). An increased metabolic rate was revealed. Radioactive tracer: 18F-FDG
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Fig4
The 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography-computed tomography (PET-CT) scan of the umbilicus mass revealed a focally increased metabolic rate, and there was no clear border line with adjacent bowel loops (Fig. 4).
The PET-CT scan: axillary lymph nodes (arrow). Radioactive tracer: 18F-FDG
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Fig5
Increased metabolic rate was also found on the right side of axillary lymph nodes (Fig. 5), which may have been caused by postoperative inflammation.
Representative images of the postoperative pathological examination of the umbilicus. H & E stain, a 100x magnification; b 400x magnification
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Fig6
Postoperative pathological examination confirmed that the specimen from the transected umbilicus and urachus tissue was moderately differentiated adenocarcinoma (Fig. 6).