Coal forms from the accumulation of plant debris, usually in a swamp environment. When plant debris dies and falls into the swamp the standing water of the swamp protects it from decay. Swamp waters are usually deficient in oxygen, which would react with the plant debris and cause it to decay.
Porokeratosis is generally considered to be a benign condition though malignant transformation has been seen in all but the punctate variety, necessitating regular followup of patients with porokeratosis (Maubec et al., 2005; Sasson & Krain, 1996).
Myringoplasty/ Tympanoplasty What is a myringoplasty and why do I need this operation? Myringoplasty is performed to repair a perforation (hole) of the eardrum. The operation is usually performed because the ear has been discharging and/or has been painful.Sometimes the operation is recommended for patients in order that they may go swimming without the risk of infection.he operation is not performed primarily to improve hearing. What are the benefits of having a myringoplasty? The benefits of having a myringoplasty are that the hole in your ear drum will be repaired which should cure/reduce the amount of discharge and pain you may be experiencing from your ear.