Abstract

WANDERLEY, Flávia Godinho Costa; ZERBINATI, Lívia Prates Soares; REIS, Sílvia Regina de Almeida  and  MEDRADO, Alena Ribeiro Alves Peixoto. Retrospective study on the prevalence of mucus retention and extravasation phenomena - clinical and histopatological correlation. RFO UPF [online]. 2013, vol.18, n.3, pp. 307-311. ISSN 1413-4012.

Objective: retention mucocele, extravasation mucocele, and ranula are lesions described in literature as being derived from mechanical trauma in salivary gland secretory duct. However, many patients with these lesions did not report the association of histopatological diagnosis obtained by biopsy to a history of previous clinical trauma. Thus, the purpose of this research was to establish the prevalence of retention and extravasation mucocele, and ranula, and collect data from clinical patients in order to confirm the history of trauma associated to these lesions. Methods: in this retrospective observational study all cases of retention mucocele, extravasation mucocele, and ranula were retrieved from the files of the Department of Oral Pathology of a private Dentistry School, from 2001 to 2012. Results: this study presented a higher prevalence of lesions in female individuals (50.7%), predominantly in the 1st decade of life (53.6%) regarding age group, and with no statistical significance. The most prevalent histopatological diagnosis was extravasation mucocele (85.9%), confirming the initial diagnostic hypothesis for this pathology (77.5%) (p < 0.05). The lower lip was the site most affected by these lesions (66.2%) (p < 0.05). Most reports collected in anamnesis indicated no significant occurrence of history of previous trauma perceived by patients (66.2%). Conclusions: due to the significant occurrence of mucus retention and extravasation phenomena observed in the present study there is an urgent need to enhance anamnesis data so that the association of trauma to these lesions is better documented.

Keywords : Mucocele; Ranula; Trauma.