Unusual Presentation of a Sigmoid Mass with Chicken Bone Impaction in the Setting of Metastatic Lung Cancer

<div>Photomicrograph of patient’s resected sigmoid mass. (a) H&amp;E staining displaying atypical tumour cells and areas of necrosis under 100x magnification. (b) Specimen under 100x magnification with CK7 staining outlining a diffuse distribution of tumour cells.</div>

Case Reports in Surgery

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Figure 9

Figure 9: Unusual Presentation of a Sigmoid Mass with Chicken Bone Impaction in the Setting of Metastatic Lung Cancer 