PMC7672248_01
CT shows an existing squamous cell carcinoma.. a) Left upper and lower lobes.. b) Left lower lobe.
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CEA, ProGRP, and CYFRA. Chest-abdominal contrast-enhanced computed tomography (CT) showed an existing squamous cell carcinoma in the left upper and lower lobes (Fig. 1).
Nodules are considered to be metastases or dissemination, and the appendix shows findings of acute appendicitis.. a) Nodule on the dorsal side of the left kidney.. b) Nodule of the peripancreatic area.. c) Nodule near the cecum.. d) The appendix was swollen with an increased concentration of surrounding fat tissue.
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Nodules were found near the cecum, mesentery, peripancreatic area, dorsal side of the left kidney, etc., and were considered to be metastases or dissemination (Fig. 2).
The appendix is thickened overall, with a white nodular structure at the root and a perforation in the middle.
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Examination of the resected specimen showed that the appendix was thickened overall, with a white nodular structure at the root and a perforation in the middle (Fig. 3).
Histopathological findings.. a) Atypical cells form large and small tumor vesicles in the thickened appendix wall, and the tumor cells proliferate invasively, centering on the proper muscle layer (HE).. b) Immunostaining shows p40(+).. c) Immunostaining shows CK5/6(+).
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Histopathologically (Fig. 4), atypical cells formed large and small tumor vesicles in the thickened appendix wall, and the tumor cells proliferated invasively, centering on the proper muscle layer.