Hyaline ring granuloma of the mouth-A foreign-body reaction that dentists should be aware of: Critical review of literature and histochemical/immunohistochemical study of a new case

Hidden vegetable matter in tissue sections - A case series

Food particles get frequently impacted in the oral cavity in varying sites. Oral pulse granuloma develops as a consequence of implantation of food particles of plant or vegetable origin in oral tissues. The lesion might be central or peripheral. It has a differing histological picture and may be confused with many other lesions including parasitic infection. Impacted vegetable matter is rarely associated with multiple myeloma, bacterial and fungal osteomyelitis, and squamous cell carcinoma and has never been reported in the literature before. Thus, in the present case series, we have discussed about the above three rare associations along with pulse granulomas associated with periapical granuloma and periapical cyst. The paper aims to discuss the clinical, histological, and polarising microscopic features of the cases and theories substantiating aetiology and in general about the differential diagnosis.

Paradental cyst with hyaline ring granuloma masquerading as pericoronitis

Paradental cyst is an odontogenic cyst associated with pericoronitis in partly erupted mandibular third molars. It is an inflammatory cyst common among the mandibular molars. The cyst is most commonly seen on the distal or distobuccal aspect of the third molars. The angle of tooth and food impaction has been postulated to be responsible for the development of the cyst in third molars. The source of the epithelium has been reported as reduced enamel epithelium. The paradental cyst is frequently misdiagnosed as a radicular cyst or dentigerous cyst. We report a case of paradental cyst in a patient with partially erupted mandibular third molar with food impaction and resulting hyaline ring granuloma.

Foreign body reaction granuloma mimicking an aggressive tumor of the mandible

Inflammatory granuloma caused by a vegetable foreign body is a lesion that can develop in the oral cavity. It results from the implantation of vegetable matter, leading to an inflammatory reaction and the development of bone resorption. This case highlights the importance of clinicians' awareness regarding this uncommon disorder.

Pulse Granuloma-Like Reaction on the Forearm Following an Accidental Wound

ABSTRACT

Pulse granulomas are uncommon reactions to vegetable exogenous matter characterized by the presence of hyaline rings. Although they are usually found in the oral cavity or along the gastrointestinal or respiratory tracts, there are a few cases described outside those regions. We present the first case of a granulomatous reaction with hyaline rings in the skin reaction after an accidental wound and suggest the term pulse granuloma-like to describe lesions that resemble pulse granulomas but with no connection to the gastrointestinal or respiratory tracts. Moreover, we provide a graphic comparison of the hyaline rings observed in our case and the histologic sections of some plants that could have been involved.

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. Pre- and post-digestion slides were examined with polarized light. The morphology of the granuloma-inciting cells is identical to the storage cells present in seeds from a variety of leguminous and non-leguminous plants. The cells that trigger the formation of "pulse granulomas"/"hyaline ring granulomas" are storage cells that are derived from ingested seeds of leguminous and non-leguminous plants. The terms "pulse," "legume," and "lentil," which have been applied to these cells, are misnomers. Our findings indicate that the terms "pulse granuloma" and "hyaline ring granuloma" are not appropriate descriptors of these lesions. We recommend that they be replaced by "seed storage cell granuloma," a term that now accurately reflects the etiology of these lesions.