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Arquivos Brasileiros de Oftalmologia

versão impressa ISSN 0004-2749versão On-line ISSN 1678-2925

Arq. Bras. Oftalmol. vol.81 no.4 São Paulo jul./ago. 2018

http://dx.doi.org/10.5935/0004-2749.20180067 

LETTERS

Chronic lacrimal canaliculitis - the answer to a three-year history of red eye

Canaliculite lacrimal crônica - a resposta para uma história de olho vermelho com 3 anos de evolução

Ana L. Basílio1 

Ana Cabugueira1 

Bárbara Borges1 

Rita Flores1 

Ana Amaro1 

Ana Magriço1 

1Central Lisbon Hospital Center, Lisbon - Portugal.

ABSTRACT

Chronic lacrimal canaliculitis is a rare infection of the lacrimal system, and can lead to misdiagnosis due to its overlapping presentation to other common entities. The authors report a case of lacrimal canaliculitis with a three-year history of recurrent unilateral red eye and mucopurulent discharge. Here, we describe the clinical course, surgical details, and microbial analysis of canaliculitis infection.

Keywords: Canaliculitis/surgery; Streptococcus constellatus; Antibacterial agents

RESUMO

A canaliculite lacrimal crónica é uma infecção rara do sistema lacrimal e pode levar a erros de diagnóstico devido à sua apresentação sobreposta a outras entidades comuns. Os autores relatam um caso de canaliculite lacrimal com história de três anos de olho vermelho unilateral recorrente e secreção mucopurulenta. Aqui, descrevemos o curso clínico, os detalhes cirúrgicos e a análise microbiológica da infecção por canaliculite.

Descritores: Canaliculite/cirurgia; Streptococcus constellatus; Antibacterianos

INTRODUCTION

Chronic lacrimal canaliculitis is a rare infection of the lacrimal system, accounting for only 2% of patients with lacrimal disease(1). This infection is typically caused by Actinomyces and less commonly by other organisms such as Staphylococcus and Streptococcus spp(2).

The most frequent patient complaints are red eye and discharge, and the classic presenting signs are mild-to-severe swelling of the canaliculus, spontaneous mucopurulent discharge from the lacrimal punctum, epiphora, and red pouting punctum(3). This infection is usually unilateral and most commonly involves the lower canaliculus(2).

Its similarity to other diseases may lead to misdiagnosis by clinicians; this is particularly important regarding surgical treatment of this condition. Infection of the lacrimal system is associated with dacryoliths or concretions formation, which is related to inefficient use of an isolated medical strategy as a definitive treatment(4).

CASE REPORT

The authors report the case of a previously healthy 43-year-old man who was born in Bangladesh and has been a resident of Portugal for the last 2 years. He presented for an ophthalmological evaluation based on a three-year history of recurrent episodes of unilateral (left) red eye and mucopurulent discharge. During that time, he underwent treatment by other physicians (general clinicians and ophthalmologists), which included multiple rounds of topical antibiotics and steroids, resulting in temporary symptom improvement with inevitable recurrence after a few days or weeks.

At presentation, a left ocular examination revealed an inferior conjunctival hyperemia combined with mild inferior canalicular swelling, pouting punctum, and mucopurulent discharge from the punctum triggered by palpation over the inferior canaliculus trajectory (Figure 1). Lacrimal system probing and irrigation was normal, and a diagnosis of chronic lacrimal canaliculitis was assumed. Cultural analysis of the mucopurulent discharge revealed cephalosporin-resistant Streptococcus constellatus, and we attempted therapy with ceftazidime irrigation combined with a scheme of ceftazidime fortified drops. The symptoms recurred after two weeks of clinical improvement, and an abscess had formed over the inflamed canaliculus with creation of a skin fistula noted (Figure 2). We performed dacryocystography to exclude the presence of a lacrimal diverticulum and results were normal.

Figure 1 Left eye examination on admission. 

Figure 2 Development of abscess and fistula 2 weeks after local treatment. 

A surgical approach was determined for abscess drainage and removal of dacryoliths under local anesthesia (lidocaine 2% with 1:100,000 epinephrine). We made an incision through the skin and the abscessed area, removing the mucopurulent content and multiple dacryoliths. Sodium chloride 0.9% and hydrogen peroxide solution were used to wash and test lacrimal canaliculus patency. The region was left open and unsutured, and a surgical drain was kept in place for 10 days. The incisional wound healed by second intention without compromising lacrimal drainage. Ciprofloxacin, both topical (0.3% eye drops solution every 6 hours) and systemic (500 mg by mouth every 12 hours) were prescribed for 10 days. The patient was asymptomatic with no inflammatory or infectious signs at one month (Figure 3) and no evidence of recurrence after one year of follow-up.

Figure 3 Left eye examination 1 month after surgery. 

DISCUSSION

Chronic lacrimal canaliculitis is a chronic inflammation of the canalicular system of the eye that can remain undiagnosed for a long period of time because it is rare and has a variable presentation(2). Patients may present with red eye, purulent discharge, epiphora, or a pouting punctum, and it may be confused with other disorders including chronic conjunctivitis, inflamed chalazion, or dacryocystitis(5-7). The lower canaliculus is most commonly affected area (49.6%-87%)(6-8), which coincides with the location in the present case.

Actinomyces is the most common causative agent of canaliculitis; however, a recent change in the microbio­logical profile has triggered the emergence of other mi­croorganisms including Streptococcus spp., Staphylococcus spp., Corynebacterium spp., and fungi. Among the Streptococcus spp., S. viridans (24.4%), S. constellatus (6.1%), S. pneumoniae (3.8%), and S. gamma hemolytic (3.8%) are the most common bacterial causes of canaliculus infection(2).

In our patient, the dacryoliths were located within the abscess where they probably developed as a result of tear stasis and inflammation/infection. According to the literature, eye concretions are present in 26%-34.4% of cases(6). Canaliculus infection may lead to dacryolith formation by electrolyte precipitation from a supersaturated solution existing within the canaliculus due to tear stasis and inflammation(9).

A detailed clinical evaluation is sufficient for diagnosing most cases of lacrimal canaliculitis. A correct diag­nosis is important because a surgical strategy is commonly needed to treat this clinical entity. Repeated antibiotic irrigation has been suggested as an alternative to surgical intervention for the treatment of chronic canaliculitis(10). However, canaliculotomy with removal of all concretions combined with topical antibiotic therapy remains the gold standard of treatment (2). Wound closure is not necessary, as it usually heals correctly by secondary intention(4), systemic antibiotic treatment may be prescribed.

In conclusion, lacrimal canaliculitis may be diagnosed incorrectly and treated as conjunctivitis, inflamed chalazion, or dacryocystitis with an inevitable recurrence of symptoms. New causative agents for lacrimal canaliculitis are emerging and include Streptococcus and Staphylococcus spp., and surgical removal of all concretions along with topical antibiotic coverage is considered the gold standard for definitive treatment.

Funding: No specific financial support was available for this study.

REFERENCES

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Recebido: 22 de Janeiro de 2018; Aceito: 10 de Abril de 2018

Corresponding author: Ana Luísa Basílio. Ophthalmology Department. Hospital de Santo António dos Capuchos - Alameda de Santo António dos Capuchos, 1169-050 - Lisboa - E-mail: a.luisabasilio@gmail.com

Disclosure of potential conflicts of interest: None of the authors have any potential conflicts of interest to disclose.

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