IPLab:Lab 7:Adenocarcinoma

Images

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  This is a gross photograph of the adenoma from the surgical specimen in this case. Note the large, ulcerated, fungating annular (encircling) carcinoma (1) with areas of hemorrhage (2). Also note the adenomatous polyps (3).

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  This is a closer view of the previous image demonstrating the raised, annular carcinoma (arrows).

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  This photomicrograph of the surgical specimen shows the transition between normal mucosa on the left and carcinoma which is invading the wall of the bowel (arrow).

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  This is a higher-power photomicrograph of the area of transition between the normal (1) and the neoplastic (2) epithelium.

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  This is a high-power photomicrograph of tumor cells invading the underlying muscularis.

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  This is a high-power photomicrograph of tumor cells forming glands.

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  This is a high-power photomicrograph of tumor cells forming glands.

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  This gross photograph from another case demonstrates an ulcerated adenocarcinoma (arrows) at the rectosigmoid junction.

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  This is a segment of distal colon from another case. Note the annular tumor that severely compromises the lumen of the colon. There is dilation of the colon proximal to the tumor.