PMC3906751_01
Preoperative and gross findings of tumor. (A) Computed tomography (CT) showed a large tumor lesion, 8.0 cm in diameter, in the left lobe of the liver. (B) Gross examination of resected liver mass showed an irregular, yellowish white solid tumor without a fibrous capsule. The border between the tumor and normal liver tissue was indistinct.
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F1
Abdominal ultrasound and abdominal computed tomography (CT) both showed a large liver tumor lesion, 8 cm in diameter involving the left lobe of the liver with intrahepatic bile duct stone (Figure 1).
Micrographs of liver mass in intraoperative histological examination. (A) Intraoperative tumor tissue showed the tumor mass was predominantly composed of solid and invasive nests of epidermoid cells with abundant keratinization in desmoplastic stroma. (B) Alcian blue staining showed that there was no mucin-producing cells intermingled within the epidermoid cells nest. (A, HE staining with original magnification x 400; B, Alcian blue staining with original magnification x 400).
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F2
The border between the tumor and normal liver tissue was indistinct (Figure 2A). There were no distinct mucin-producing cells in the tissues (Figure 2B).