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Pilomatricoma is an uncommon hamartomatous tumor of the hair matrix. Bullous and anetodermic changes over pilomatricoma are rare. We report an 18-year-old male with an asymptomatic nodule with overlying cystic changes on the left arm of 6-month duration with clinical and histological features of both bullous and anetodermic modifications. We also reviewed the associated literature to conclude that there is sufficient overlap in these two entities. Both variants show a bullous or pseudobullous appearance clinically and loss of elastin, sparse collagen bundles separated by intense edema, and dilated lymphatics/blood vessels in the dermis overlying the tumor mass histologically. We therefore propose that bullous, pseudoampullary, anetodermic, and lymphangiectatic forms should be considered as synonymous or transitional to the ultimate scar-like anetodermic appearance.

A technique is proposed to insulate iceberg using foamed plastic. The use of foam is superior to plastic wraps because of ease in application, better insulating properties, and better stability in transit. Polyurethane foam is selected since it has the least thermal conductivity of all known insulating foam materials. Physical properties are given at various temperatures, densities, and pressures. Cost estimates are given and methods of application are discussed. Polyurethane foam can be sprayed on the surface of the iceberg by specially-built equipment which can operate under water by remote control. The foam can be applied so as to conform to uneven surfaces. Two types of foam are considered, namely the open-cell and closed-cell construction.