The benign type is seen in benign lesions such as benign tumors and following trauma. An aggressive type is seen in malignant tumors, but also in benign lesions with aggressive behavior, such as infections and eosinophilic granuloma.
When setting up a Hookah air system, you will frequently need an array of metal fittings. For use around water, you should use stainless steel or brass fittings only. This is especially important when diving in salt water. Fittings made of ferrous metal will rust or corrode when used in, or near a water environment.
Step by step instruction to design your own hookah: 1) Pick your favorite hookah stem from our hookah stem accessories category. 2) Select the base, bowl, hose, and bowl grommet of your choice from the drop down menus on the right side of the stem picture. 3) Make sure you have the correctly corresponding bowl grommet option. If you already have a bowl at home that you want to use, double check with grommet is the correct fit.