Pulse/hyaline ring granuloma revisited: etiologic role of seed-derived storage cells.

The objectives are to precisely identify the cells that incite the formation of lesions that are generally known as "pulse granuloma" or "hyaline ring granuloma" that occur mostly in the oral cavity, in the lungs, in and around the gastrointestinal tract, and other sites, and to suggest an alternative name for these lesions that accurately reflects their etiology. Critical review of the medical and dental literature was undertaken, and the microscopic appearances of granuloma-inciting cells depicted in the literature and seen in our practices were compared with seeds and their contents originating from a variety of leguminous and non-leguminous plants. Sections of selected seeds were examined microscopically before and after digestion with saliva and alpha amylase and subsequent routine processing and staining with H&E, PAS, and iodine.

[Atypical or bizarre leiomyoma of the scrotum. Report of one case and bibliographic review].

Objectives: To describe the clinicopathological characteristics of the scrotal bizarre leiomyoma in order to increase our understanding, and avoid the possibility of erroneous diagnosis and treatment.

Results: We report the case of a 43 year-old patient with a pendulous nodular scrotal tumour, which after microscopic study could be seen to be of smooth muscular origin, corresponding, because of its peculiar histological characteristics, to the rare variety called atypical or symplasmic bizarre leiomyoma.

Conclusion: Although it is a form of leiomyoma which is extremely infrequently found in the scrotum, it is necessary to know it can occur and to know that we are dealing with a benign tumour that should be treated as such.