Scanning and Transmission Electron Microscopic Observations of a Congenital Epulis

Inoue, Hideziro; Okina, Tamaka; Takenaka, Masazumi; Morinaga, Futoshi; Kawahara, Hideki; Miyagi, Takumi; Kitagawa, Hirokazu; Kawahara, Hideo; Kitahara, Yousuke

doi:10.2739/kurumemedj.25.17

Kurume Med. J.

1978

DOI: 10.2739/kurumemedj.25.17

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Scanning and Transmission Electron Microscopic Observations of a Congenital Epulis

Hideziro Inoue¹,

Tamaka Okina²,

Masazumi Takenaka³

et al.

Abstract: We observed, under the scanning and transmission electron microscope, the case of a bean-size tumor which developed from the moment of his birth in the front tooth area of the lower jaw of a male newborn baby of 37 days. These findings under both electron microscopes suggest to consider on the hamartoma character of the tumor from mesenchymal tissue.

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1978

1985

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Electron microscopic observations of benign tumors in oral maxillo facial lesions.

Hieda

1985

Kurume Med. J.

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Electron microscopic examinations were made in 20 cases of benign tumor lesions developing in the human lip, buccal mucosa, palate, dorsal area of the tongue and gum. The following findings were obtained. 1) The lumens were observed in pleomorphic adenoma. Microvilli of the tumor cells occurred on the inner side of the luminal wall and the cell organelles were well-developed. 2) The luminal wall of a capillary hemangioma was composed of a single layer of endothelial cells and there were many erythrocytes in the lumen. 3) In the lipoma, a massive proliferation of round fat cells of various sizes had occurred. The nuclei were marginal and lipid droplets in the cytoplasm were almost homogeneous. 4) The cells of the fibroma were spindly or stellate. A well-developed Golgi apparatus and rough surfaced endoplasmic reticulum were observed in the cytoplasm. 5) The cells in the neurilenoma were arranged in a regular pattern, but the cell processes were intertwined and covered with the basement lamina. 6) In the leimyoma many actin filaments and dense-paches were observed in the cytoplasm. 7) The cells of the granular cell tumor were enlarged and the nuclei were small. The cytoplasm was filled with many round osmophilic granules. 8) Many Schwann cells and f ibroblasts were observed in the neurof ibroma and mature collageneous fibers were frequently observed in the stroma. 9) A proliferation of collageneous fibers, reticular fibers, capillaries and osteoid figures were observed in the epulis fibromatosa. 10) In the cavernous hemangioma the inner layer of the vascular wall had a saccif orm structure composed of flat endothelium. Edematous structures were observed in the subendothelial area. On the basis of these findings, it can be concluded that transmission and scanning electron microscopic examination is helpful in the differential diagnosis of tumor lesions.

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Electron microscopic observations of benign tumors in oral maxillo facial lesions.

Hieda

1985

Kurume Med. J.

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Scanning electron microscopic observation on a case of cavernous hemangioma

Okina

Inoue

Kawahara

et al. 1978

Jpn. J. Oral Maxillofac. Surg.

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Scanning and Transmission Electron Microscopic Observations of a Congenital Epulis

Cited by 2 publications

References 5 publications

Electron microscopic observations of benign tumors in oral maxillo facial lesions.

Electron microscopic observations of benign tumors in oral maxillo facial lesions.

Scanning electron microscopic observation on a case of cavernous hemangioma

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