A case of tuberculous endophthalmitis successfully treated with vitrectomy followed by antituberculous agents
© Hase et al.; licensee Springer. 2015
Received: 5 January 2015
Accepted: 24 April 2015
Published: 8 May 2015
Tuberculous endophthalmitis is very rare with only 18 reports published worldwide and only a few cases in Japan. We report a case of tuberculous endophthalmitis successfully treated with vitrectomy followed by antituberculous agents.
An 81-year-old man was referred to us due to the exacerbation of vitreous opacity on his left eye(OS) after he had received the corticosteroid therapy. His best corrected visual acuity was light perception OS, and he had severe intraocular inflammation with fibrin formation in the anterior chamber and dense vitreous opacity. A chest CT showed miliary nodules indicating miliary tuberculosis, and pars plana vitrectomy was performed. Intraoperative observation showed that the vitreous cavity was filled by fibrin, and large elevated subretinal yellow-white lesions were present at the mid-periphery. The patient immediately received triple antituberculous agents orally, and Mycobacterium tuberculosis was detected in vitreous fluids. The intraocular inflammation gradually decreased, and the subretinal mass regressed within 2 weeks.
We encountered a case of tuberculous endophthalmitis successfully treated with vitrectomy followed by antituberculous agents. If endophthalmitis is suspected in a patient with systemic tuberculosis infection, prompt vitrectomy along with the administration of antituberculous agents may be necessary.
KeywordsTuberculosis Uveitis Tuberculous endophthalmitis Pars plana vitrectomy Antituberculous agents Mycobacterium tuberculosis Prednisolone
Tuberculosis is a serious infectious disease that has re-emerged as a public health problem in recent years and is ranked as an important cause of death worldwide . Intraocular tuberculosis represents an extrapulmonary form of this disease. Approximately 1% to 2% of patients with tuberculosis show ocular involvement, in the lids, conjunctiva, cornea, sclera, uveal tract, optic nerve, or orbit . The most common form of ocular involvement is uveitis. In tubercular uveitis, posterior or panuveitis is the most common type and includes choroidal tubercules, choroidal tuberculoma, subretinal abscess, and serpiginous-like choroiditis . However, the most frequent type in Japan is retinal vasculitis, while the other types are rare. Moreover, the development from ocular tuberculosis to endophthalmitis is very rare, and only a few cases have been reported in Japan . To the best of our knowledge, only 18 reports have been previously published worldwide, and almost all of these cases underwent enucleation or evisceration [1,5,6] because they rapidly progressed with destruction of the intraocular tissues. We report a case of tuberculous endophthalmitis that resulted in the remission of ocular inflammation by pars plana vitrectomy (PPV) combined with subsequent administration of antituberculous agents.
The case was an 81-year-old Japanese man who had visited an ophthalmology clinic complaining of blurred vision of the left eye with periocular pain and was diagnosed as uveitis on his left eye(OS). He had also suffered from left temporal headaches for 2 weeks, and he had undergone corticosteroid pulse therapy based on a suspected diagnosis of temporal arteritis. Two weeks later, the vitreous opacity OS exacerbated, and he was referred to us. He had no systemic diseases except well-controlled systemic hypertension and hyperlipidemia.
Best corrected visual acuity (BCVA) was 1.0 on his right eye(OD) and light perception OS. The right eye showed a normal appearance. In the left eye, slit lamp examination showed pigmented keratic precipitates, Descemet’s membrane folds, and severe cells and flare with fibrin in the anterior chamber. The fundus was not visible due to the dense vitreous opacity. B-mode ultrasonography showed diffuse high density in the vitreous cavity and dome-shaped high-density lesions elevated toward the inside at the site of the temporal peripheral choroid. Single-flash electroretinography (ERG) results were normal OD and non-recordable OS. Examination of serum was normal, including blood counts and liver function, except for an increase in C-reactive protein (1.65 mg/dl). In addition, we were informed that chest computed tomography showed diffuse miliary nodules in both lungs indicating miliary tuberculosis.
Two months after the operation, the patient showed re-exacerbation of intraocular inflammation OS despite continuing antituberculous agents. BCVA decreased to light perception OS. Anterior chamber inflammation increased to 2+ flare and 4+ cells. The fundus could not be visualized due to diffuse vitreous opacity with fibrin formation in the anterior vitreous. Although systemic antibacterial and antifungal drugs were added, intense intraocular inflammation continued. However, when oral prednisolone 20 mg/day was initiated, inflammation in the anterior chamber and the vitreous resolved dramatically, and BCVA improved to 0.15. The oral prednisolone was gradually decreased and was stopped 11 months after the operation. The antituberculous agents were also stopped 13 months after the operation. No recurrence of intraocular inflammation was seen, and the final visual acuity was 0.1 OS.
We encountered this case of tuberculous endophthalmitis diagnosed by systemic screening and bacterial culture of vitreous fluids. In the early stage after the operation, we initiated antituberculous agents, which led to the remission of endophthalmitis and BCVA improvement.
According to previous reports, the visual prognosis for tuberculous endophthalmitis is very poor. Of the 13 cases of this disease reported before 2000, 12 eventually underwent enucleation or evisceration while 1 case showed spontaneous remission [1,5]. From 2001 onward, three out of five cases underwent enucleation while endophthalmitis regressed after PPV in the remaining two cases [1,6]. These observations suggest that the visual prognosis for this disease is poor despite the progression of vitrectomy techniques. This disease often occurs in developing countries that have high-indigenous rates of tuberculosis. Patients with tubercular uveitis are likely to be diagnosed with idiopathic uveitis and are treated solely with local and/or systemic corticosteroids . In the present case, we speculate that the systemic corticosteroid therapy that had been performed at another hospital caused the progression from choroidal tuberculoma to endophthalmitis. Investigations of tuberculosis for the eyes and systemic tissues might be also insufficient. Moreover, new diagnostic tools, such as polymerase chain reaction of M. tuberculosis using aqueous or vitreous fluids, also have low sensitivity . Therefore, ophthalmologists should suspect tuberculosis routinely as the cause of endophthalmitis and should perform systemic screening for tuberculosis and analysis of ocular fluids if necessary. In such cases, the decision of whether to start empirical antituberculosis treatment in the absence of positive results is difficult. More sensitive and rapid tests for ocular tuberculosis are urgently needed to guide such cases.
In our case, the recurrence of endophthalmitis occurred 2 months after PPV. Inflammation dramatically resolved with systemic prednisolone therapy, suggesting that the pathological condition was due to an allergic reaction to M. tuberculosis components and not due to the recurrence of tubercular infection. This reaction may be very similar to the Jarisch-Herxheimer reaction, which is an exacerbated inflammation seen in patients with tuberculosis just after starting systemic antituberculous treatment. Therefore, when inflammation recurs or worsens in patients with ocular tuberculosis, ophthalmologists should consider the possibility of an allergic reaction to the bacterial components.
In conclusion, we encountered a case of tuberculous endophthalmitis diagnosed by analysis of ocular fluids obtained by PPV. Triple antituberculous oral agents were initiated from the early stage after the operation, and endophthalmitis dramatically disappeared. If endophthalmitis is suspected in the patient with systemic tuberculosis infection, prompt vitrectomy along with the administration of antituberculous agents may be necessary.
Written informed consent was obtained from the patient.
best corrected visual acuity
pars plana vitrectomy
This diagnosis and treatment were supported in part by Hokkaido University Hospital First Department of Medicine.
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