Colonic Metastasis of Adenoid Cystic Carcinoma 19 Years after the Primary Tumor Resection

Figure 2

Microphotograph (200x) of the mass showing a very distinctive appearance and consists of different patterns. There were smaller gland or duct-like structures as well as larger nests with cribriform pattern. Some glands or spaces showed mucin-like or basophilic material. The tumor cells were round to oval with fine chromatin, small inconspicuous nucleoli, indistinct cell borders, and light nongranular cytoplasm. Mitotic figures were rare.