Sterling silver (an alloy of 92 percent silver, blended with copper and other metals) gives a lustrous appearance to coins, jewelry, and silverware. The fact that pure silver is slightly harder than gold, but still very ductile and malleable, makes it a natural choice for dental fillings.
Ultrasound detected papillary projections in 78% of tumors. Papillary projections were disseminated in 33% of malignant, 20% of borderline, and 0% of benign tumors (p = 0.0049). The mean size of the papillary projections was 9.6, 15.7, and 35.3 mm in benign, borderline, and malignant tumors, respectively (p = 0.0007).
Inverted papillomas exhibit exophytic and endophytic growth patterns. Invagination into the underlying stroma instead of the exophytic growth pattern is exhibited by squamous cell or limbal papillomas, whereas some lesions exhibit a mixture of exophytic and endophytic growth patterns.nverted papillomas exhibit exophytic and endophytic growth patterns. Invagination into the underlying stroma instead of the exophytic growth pattern is exhibited by squamous cell or limbal papillomas, whereas some lesions exhibit a mixture of exophytic and endophytic growth patterns.