J Korean Assoc Oral Maxillofac Surg.  2017 Jun;43(3):178-181. 10.5125/jkaoms.2017.43.3.178.

Peripheral odontogenic myxoma in a 12-year-old girl: a rare entity

Affiliations
  • 1Department of Oral Pathology and Microbiology, Bharati Vidyapeeth Deemed University Dental College and Hospital, Sangli, India. kmamata@yahoo.com
  • 2Department of Pedodontics, Bharati Vidyapeeth Deemed University Dental College and Hospital, Sangli, India.

Abstract

Peripheral odontogenic myxoma is a rare odontogenic tumor representing an extra osseous counterpart of central odontogenic myxoma. It is commonly seen in gingiva between the 3rd and 4th decades of life and appears predominantly in females. Compared to central odontogenic myxoma, it is a less aggressive, slow-growing lesion with a low recurrence rate. However, close postoperative follow-up is required because of the unlimited growth potential of incompletely removed lesions. It shares many features with other soft tissue myxoid proliferations occurring in the oral cavity and hence needs to be differentiated from them. Very few cases of peripheral odontogenic myxomas have been reported and, to the best of our knowledge, no case has been reported in a pediatric patient. We present an unusual case of peripheral odontogenic myxoma occurring in a 12-year-old girl located in the anterior mandibular gingiva, with an emphasis on differential diagnosis.

Keyword

Myxoma; Odontogenic tumours; Gingiva; Mandible; Mast cells

MeSH Terms

Child*
Diagnosis, Differential
Female*
Follow-Up Studies
Gingiva
Humans
Mandible
Mast Cells
Mouth
Myxoma*
Odontogenic Tumors
Recurrence

Figure

  • Fig. 1 A. Clinical photograph showing the gingival mass extending buccolingually between teeth #31 and #32. B. Occlusal radiograph showing drifting of #31 and #32 without bone involvement.

  • Fig. 2 2. A. H&E stained section (×10) showing loose myxomatous lesional tissue separated from the overlying stratified epithelium by a fibrous capsule. B. Toluidine blue-stained section (×40) showing mast cells in myxoid stroma. C. Reticulin-stained section (×10) showing strong positivity. D. Lesional tissue showing reactivity to Alcian blue staining (×10).


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