PMC7212967_01
CT of abdomen and pelvis shows obstructive mass in sigmoid colon.
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Carcinoembryonic antigen 4.32 ng/mL (reference 0-3), and elevated procalcitonin 1.87 ng/mL (reference 0.05-0.5). Computerized tomography (CT) of the abdomen revealed a colonic mass resulting in sigmoid colonic obstruction and large bowel dilatation (Fig. 1).
CT of chest shows patchy ground glass opacities in right upper lung, peripheral field.
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COVID-19 evaluation, particularly with elevated procalcitonin, lymphopenia and ground glass opacities in the right upper lung on chest CT (Fig. 2). COVID-19 testing was not available prior to surgery and performed afterward.
Hematoxylin-eosin staining of colon tumor shows moderately differentiated malignant cells invading the seroma.
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Surgical pathology revealed adenocarcinoma T4aN0M0 (Fig. 3).