Epithelial sheath neuroma: a case report and discussion of the literature.

Here, a case of a rare epithelial sheath neuroma (ESN) is reported. A 49-year-old white female presented with a 5 mm solitary, slightly raised, erythematous, itchy papule on her right upper back. The clinical impression was consistent with an inflamed nevus.

A rational approach to the stool ova and parasite examination.

Background: Examination of multiple stool specimens per patient to rule out parasitic infection continues to be recommended in the literature. Attractive alternatives have been proposed, such as examination of a single specimen, but data to support their use have been inconclusive.

Methods: We reviewed the results of comprehensive stool ova and parasite examinations performed during a 1-year period to determine the incremental value of examining >1 specimen.

Nuclear transport by laser-induced pressure transients.

Purpose: Control of the transport of molecules into the nucleus represents a key regulatory mechanism for differentiation, transformation, and signal transduction. Permeabilization of the nuclear envelope by physical methods can have applications in gene therapy. Laser-induced pressure transients can produce temporary aqueous pores analogous to those produced by electroporation and that the cells can survive this procedure.