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Biomedical subjects

R M Melhado

Publications and source records attributed to R M Melhado.

At least 19 recordsLinked to original sources
PubMed1993

Basaloid squamous carcinoma of the oral cavity. Report of a case.

A case of basaloid squamous carcinoma that involves the posterior buccal mucosa is described. The major histopathologic feature is a carcinoma with a basaloid pattern in association with squamous differentiation. The basaloid cells exhibit large and vesicular nuclei and eosinophilic clear or vacuolated cytoplasm. Cells are distributed in cords, trabeculae, or lobules that occasionally show glandular arrangement. The majority of the tumor cells are positive for keratin and a large group of cells distributed in glandular arrangement are positive also for vimentin.

Adult↗
PubMed1993

The oral blue nevus in children: a case report.

The intraoral blue nevus is a benign, relatively rare lesion that usually occurs in adults and most often in women. The reported case is interesting because the patient was only 11 years old. The lesion, located in the hard palate, was surgically removed. The specimen was sent for histologic examination, resulting in the final diagnosis of common blue nevus.

Child↗
PubMed1990

[Effects of ultrasonic stimulation on tooth extraction wound healing: histological study in rats].

The effects of ultrasound on the wound healing process after teeth extractions were studied histologically. The right upper incisor was extracted in 56 rats. They were divided into 2 groups, one control (I) and one experimental (II). Group II received ultrasound stimulation that was applied with the frequency of repetition of 1,000 Hz and pulse length of 2,000 us continuously, during five minutes daily since the extraction day until 24 hours before the death. The rats were sacrificed at 3, 6, 9, 12, 15, 18, and 21 postoperative days. The results showed a precocious granulation tissue formation, faster remodeling of osseous ridges, and consequently acceleration of the alveolar wound healing process.

Alveolar Process↗
PubMed1977

Squamous-cell carcinoma in a residual mandibular cyst.

Described is a case of squamous-cell carcinoma arising in a residual cyst in a 60-year-old edentulous woman. The clinical and radiographic diagnosis was residual cyst, and the treatment employed was conservative surgical enucleation. The cause of these changes is unknown. Theoretically, the inflammatory reaction may have been a predisposing factor.

Carcinoma, Squamous Cell↗