Brain abscess is a very rare condition but has a significant mortality rate. The three main routes of inoculation are trauma, contiguous focus, and the hematogenous route. The odontogenic focus is infrequent and is usually a diagnosis of exclusion. This paper presents a brain abscess case proven to be of dental origin, caused by Actinomyces meyeri and Fusobacterium nucleatum. This case highlights the risk underlying untreated dental disease and why oral infectious foci removal and good oral health are essential in primary care.
Oral common blue nevus is an asymptomatic, benign, rare, pigmented lesion and sometimes clinically indistinguishable from other pigmented lesions such as the cellular blue nevus or early-stage malignant melanoma. Since it shows clinical similarities with a malignant lesion and with cellular blue nevus that can itself suffer malignant transformation, the decisive diagnosis is crucial for adequate treatment, follow-up, and prognosis. Diagnosis confirmation is given by histological analysis, the reason why most oral pigmented lesions are excised. The following case presents an asymptomatic oral pigmented lesion of the hard palate discovered during observation in an emergency setting due to an abscess of dental origin. The lesion was fully excised, and histological examination reported a “common blue nevus.” In this case, we intend to present a rare lesion of the oral cavity and the importance of performing a routine oral examination when given a chance as a preventive approach.
The trichilemmoma is a benign cutaneous epithelial tumor that results from a hamartomatous proliferation of cells from the hair follicle. The multiplication of glycogen-rich clear cells causes a papular or nodular lesion of the skin. Trichilemmomas may be solitary or multiple (associated with Cowden's syndrome). The desmoplastic trichilemmoma is a histologic variant that resembles invasive carcinomas such as trichilemmal carcinoma, basal-cell carcinoma or squamous-cell carcinoma. A 68-year-old male presented with an asymptomatic ulcerated papule in his perioral area, after being referred to an oral surgeon by his dental hygienist. The lesion was excised and the histopathologic examination led to the diagnosis of conventional trichilemmoma. At the 1-year follow-up, the patient was free from recurrence. (Rev Port Estomatol Med Dent Cir
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