Epidemiological survey of mucus extravasation phenomenon at an oral pathology referral center during a 43 year period

Bezerra, Thâmara Manoela Marinho; Monteiro, Bárbara Vanessa de Brito; Henriques, Águida Cristina Gomes; Carvalho, Marianne de Vasconcelos; Nonaka, Cassiano Francisco Weege; Miguel, Márcia Cristina da Costa

doi:10.1016/j.bjorl.2015.09.013

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Brazilian Journal of Otorhinolaryngology

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ORIGINAL ARTICLES • Braz. j. otorhinolaryngol. 82 (05) • Sep-Oct 2016 • https://doi.org/10.1016/j.bjorl.2015.09.013 copy

Epidemiological survey of mucus extravasation phenomenon at an oral pathology referral center during a 43 year period^{^☆} ☆ Please cite this article as: Bezerra TM, Monteiro BV, Henriques AC, de Vasconcelos Carvalho M, Nonaka CF, da Costa Miguel MC. Epidemiological survey of mucus extravasation phenomenon at an oral pathology referral center during a 43 year period. Braz J Otorhinolaryngol. 2016;82:536-42.

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

INTRODUCTION:

Mucoceles are common benign pseudocystic lesions of the oral cavity; their main etiological factors are trauma and ductal obstruction. Two histological patterns are found: mucus retention phenomenon (MRP) and mucus extravasation phenomenon (MEP). Mucus extravasation phenomenon is the more common histological subtype and it mainly affects the lower lip. The knowledge of its main clinical features and management is important to assist health professionals in clinical practice.

OBJECTIVE:

This study aimed to determine the relative frequency and distribution of oral mucoceles in an oral pathology reference center.

METHODS:

Cross-sectional historical study that analyzed all cases pathologically diagnosed as mucus extravasation phenomenon by the department of anatomic pathology of an oral pathology referral center from June of 1970 to May of 2014, considering the clinical characteristics of the lesion and those relating to the patient. SPSS v. 20.0 software for Windows was used for descriptive analysis.

RESULTS:

During 43 years, 719 cases of mucus extravasation phenomenon (54.7% men and 45.3% women) were registered, with the lower lip as the most commonly affected site (n = 484; 67.3%). The average age of patients was 20.8 years (SD ± 14.4) with a peak occurrence in the second decade of life. Most professionals had oral mucocele/ranula (n = 606; 84.3%) as the initial clinical impression.

CONCLUSION:

Mucus extravasation phenomenon is a lesion that primarily affects young patients, affecting mainly the lower lip, and is commonly found in oral diagnostic services.

Keywords:
Mucocele; Ranula; Minor salivary glands

Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Sede da Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico Facial, Av. Indianópolia, 1287, 04063-002 São Paulo/SP Brasil, Tel.: (0xx11) 5053-7500, Fax: (0xx11) 5053-7512 - São Paulo - SP - Brazil
E-mail: revista@aborlccf.org.br

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[1] * Corresponding author. E-mail:mccmiguel@hotmail.com(M.C. da Costa Miguel).

Anatomic location	Number (n)	Percentage (%)
Lower lip	484	67.3
Upper lip	2	0.3
Palate	4	0.6
Cheek mucosa	27	3.8
Tongue	58	8.1
Floor	69	9.6
Others	60	8.3
No information	15	2.1
Total	719	100

Skin color	Number (n)	Percentage (%)
Leucoderma	348	48.4
Melanoderma	135	18.8
Feoderma	133	18.5
No information	103	14.3
Total	719	100

Clinical features	Variable	Number (n)	Percentage (%)
Surface	Smooth	94	13.1
	Rough	17	2.4
	Ulcerated	3	0.4
	No information	605	84.1

Color	Whitish	97	13.5
	Reddish	86	12
	Yellowish	13	1.8
	Bluish/Purplish	75	10.4
	Translucent	66	9.2
	Similar to the mucosa	260	36.2
	Others	27	3.8
	No information	95	13.2

Type of lesion	Polypoid	52	7.2
	Bulging mass	430	59.8
	Blister	14	1.9
	No information	223	31

Symptoms	Symptomatic	51	7.1
	Asymptomatic	510	70.9
	No information	158	22

Size range	0-2cm	622	86.5
	2.1-4cm	27	3.8
	From 4.1cm	2	0.3
	No information	68	9.5

Age group	0-10 years	163	22.7
	11-20 years	264	36.7
	21-30 years	139	19.3
	31-40 years	59	8.2
	41-50 years	19	2.6
	51-60 years	15	2.1
	61-70 years	15	2.1
	71-80 years	5	0.7
	81-90 years	2	0.3
	No information	38	5.3

History of trauma	Yes	170	23.6
	No	48	6.7
	No information	501	69.7

History of volume change	Yes	52	7.2
History of volume change	No information	667	92.8

Clinical diagnosis	Number (n)	Percentage (%)
Mucocele/ranula	606	84.3
Inflammatory fibrous hyperplasia	28	3.9
Fibroid	26	3.6
Papiloma	12	1.7
Mucus retention cyst	8	1.1
Lipoma	6	0.8
Hemangioma	4	0.6
Pyogenic granuloma	2	0.3
Other	10	1.4
No information	17	2.4
Total	719	100