Case Report

Colonic Metastases from Pleomorphic Carcinoma of the Lung Presenting as an Ileocecal Intussusception

Table 1

Immunohistochemical analysis of the cecal tumor.


Pancytokeratin (AE1/AE3)Tumor 4+
Cytokeratin 7 (CK7)Tumor 4+
Cytokeratin 20 (CK20)Tumor negative
CDX2Tumor negative
Thyroid transcription factor-1 (TTF-1)Tumor 4+
VimentinTumor positive
Melanocyte antigen (Melan-A)Tumor negative
Human melanoma black (HMB-45)Tumor negative
S100Tumor negative
Pan-melanomaTumor negative
Cluster of differentiation 117 (CD117) (c-Kit)Tumor negative
DesminTumor negative,
myofibroblasts positive
Smooth muscle actin (SMA)Negative
Cluster of differentiation 31 (CD31)Tumor negative
Cluster of differentiation 34 (CD34)Tumor negative
Cluster of differentiation 45 (CD45), leukocyte common antigen (LCA)Tumor negative,
entrapped reactive
lymphocytes positive