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Year : 2010  |  Volume : 3  |  Issue : 2  |  Page : 81-85 Table of Contents   

Retinal vasculitis in a patient with abdominal tuberculosis

Retina Clinic, Dr. A. Govindarajan Eye Hospital and Research Institute, Tiruchirapalli, Tamil Nadu, India

Date of Web Publication9-Jun-2010

Correspondence Address:
Balaji Kannan
Dr A Govindarajan Eye Hospital, 6, Officer's Colony, Puthur, Tiruchirapalli, Tamil Nadu - 620 017
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0974-620X.64232

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Tuberculosis (TB) is one of the most common systemic diseases in India. Intraocular TB is however, rare. Retinal vasculitis is a relatively rare manifestion of intraocular TB. We report a case of bilateral retinal vasculitis in a 19-year-old girl with abdominal tuberculosis. The patient responded well to anti-TB treatment along with a short course of low dose oral steroids. Vision in her right eye however remained compromised due to residual maculopathy. This is the first report of bilateral retinal vasculitis due to colonic TB.

Keywords: Colonoscopy, C reactive protein, Eale′s disease, retinal vasculitis, serum ACE, polymerase chain reaction

How to cite this article:
Kannan B, Govindarajan K, Kummararaj S, Balaji V, Natarajapillai V. Retinal vasculitis in a patient with abdominal tuberculosis. Oman J Ophthalmol 2010;3:81-5

How to cite this URL:
Kannan B, Govindarajan K, Kummararaj S, Balaji V, Natarajapillai V. Retinal vasculitis in a patient with abdominal tuberculosis. Oman J Ophthalmol [serial online] 2010 [cited 2023 Mar 31];3:81-5. Available from: https://www.ojoonline.org/text.asp?2010/3/2/81/64232

   Introduction Top

Tuberculosis is a chronic infection caused by Mycobacterium tuberculosis and Mycobacterium bovis. Intraocular tuberculosis is however rare (1% of all cases of TB). [1] Mycobacteria hematogenously disseminate to the eye and while the choroid is the most common site of initial involvement, TB may result in various manifestations such as scleritis, iritis, iridocyclitis, parsplanitis, choroiditis, chorioretinitis, neuroretinitis, retinal vasculitis, choroidal tuberculoma, sub retinal abscess, optic neuropathy, and endophthalmitis. TB panophthalmitis was common before the era of antiTB treatment. Retinal vasculitis, which represents small vessel inflammation involving the arterioles, capillaries, and post capillary venules, either singly or in combination, is a relatively rare manifestation. [2] We report a case of bilateral retinal vasculitis in a young patient with abdominal tuberculosis. [3]

   Case Report Top

A 19-year-old girl presented to our hospital with complaints of sudden diminution of vision in the right eye (OD) since morning. She gave a history of chronic abdominal pain, loss of appetite, weight loss, and chronic cough of three months duration. Gynecological history revealed amenorrhea in the last three months.

On examination, vision OD was counting fingers at five meters and 20/40 in the left eye (OS). Extra ocular movements were full. Anterior segment evaluation with slit lamp biomicroscope was normal. There were few anterior vitreous cells in both eyes (OU). Fundus examination (OD) media clear, disc (size, shape and color) normal, macular edema superiorly and dilated tortuous (superotemporal and inferotemporal tributary veins) with perivascular sheathing and scattered areas of superficial and deep retinal hemorrhages in midperiphery of all the quadrants. In OS media clear, disc normal, macula normal, tortuous superotemporal tributary veins with hemorrhages in midperiphery of all the quadrants [Figure 1]. Fundus fluorescein angiography showed extensive areas of hypo fluorescence (blocked fluorescence due to retinal hemorrhages) and disc staining in the late phase OU. Some leakage of the dye from the capillaries in the affected segment is seen OD. A small zone of capillary non perfusion area noted in the nasal quadrant of OS [Figure 2],[Figure 3],[Figure 4].

Hemoglobin was 8.5mg/dl and peripheral blood smear showed microcytic hypochromic red blood cells. ESR was found to be 45 mm at 1 st hour which are performed routinely in our hospital for patients with retinal vasculitis. Serological tests namely rheumatoid arthritis factor and antinuclear antibody were negative. C-reactive protein (CRP) and serum angiotensin converting enzyme (SACE) levels were within normal range. Stool test for occult blood was negative. Chest X-ray and barium meal study were normal. Ultrasound abdomen showed free fluid in the cul de sac and retro peritoneum. Mantoux test was positive at 13Χ13 mm. The patient underwent colonoscopy by surgical gastroenterologist, which showed ulcers in the ascending colon and was diagnosed as colonic TB on the basis of clinical appearance and histopathological evidence.

A diagnosis of retinal vasculitis secondary to colonic TB was made and the patient was commenced on antiTB therapy Tab. Isoniazid 300mg, Tab. Rifampicin 600mg, Tab. Ethambutol 800mg and Tab. Pyrazinamide 1000mg along with a short course of low dose oral steroids (oral prednisolone 1mg/kg started with 40mg/day and tapered 10mg/week for 4 weeks.)

She was monitored every month and three months after treatment, fundus examination OU showed resolution of retinal vasculitis [Figure 5]. Fundus fluorescein angiography showed resolution of hemorrhages, staining of venules OD with adjoining CNP [Figure 6] and [Figure 7]. Sectoral scatter photocoagulation of areas of capillary dropouts was performed OU. At the last follow up, her best corrected visual acuity OD was 20/120 and 20/20 OS. Optical Coherence Tomography (OCT) showed foveal thinning (83microns) OD and normal foveal thickness (143 microns) OS [Figure 8].

   Discussion Top

The large variations in clinical presentation and the lack of uniformity in diagnostic criteria make the diagnosis of intraocular TB difficult. In most cases diagnosis requires corroborative evidence, such as a positive PPD and chest x-ray, or a positive therapeutic trial for TB with exclusion of other causes (presumed ocular TB). Direct evidence for the presence of the infectious agent in the eye by demonstration of acid-fast organisms under the microscope or the detection of bacterial genome by polymerase chain reaction (PCR) is required for confirmation (confirmed ocular TB). [4]

There are several reports of retinal vasculitis due to TB. Gupta and co workers described thirteen patients of retinal vasculitis. [4] In all patients PCR of intraocular fluid (aqueous and vitreous) was positive for Mycobacterium TB. Rosen and co workers described a series of twelve patients with intraocular TB; nine of them had florid ischemic retinal vasculitis. [5] Hoh et al. reported a case of bilateral retinal periphlebitis which responded promptly to two months of antiTB treatment. [6] Eale's disease is a form of retinal vasculitis predominantly affecting the peripheral retina of young and otherwise healthy adults between 15-40 years. Biswas et al. demonstrated Mycobacterium TB by nested PCR supporting the association of Mycobacterium TB in Eale's disease. [7]

The differential diagnosis in our case included collagen vascular disease, sarcoidosis and hematological disorder; however these were ruled out by investigations. Antitubercular therapy in a patient of suspected tubercular retinal vasculitis should be four drug regimens which include isoniazid 5 mg/kg/day, rifampicin 450 mg daily if body weight is less than 50 kg and 600 mg/day if body weight is more than 50 kg, ethambutol 15 mg/kg/day and pyrazinamide 20 mg/kd/day for first four months followed by rifampicin and isoniazid for 9-14 months.

Our case is the first report of bilateral retinal vasculitis due to colonic TB. Thorough systemic evaluation in patients with retinal vasculitis to detect TB and prompt treatment with antiTB therapy can preserve vision. Prompt diagnosis and treatment with antiTB therapy led to an improvement in our patient. Vision in her right eye however remained compromised due to residual maculopathy.

   References Top

1.Bouza E, Merino P, Muρoz P, Sanchez-Carrillo C, Yαρez J, Cortιs C. Ocular tuberculosis. A prospective study in a general hospital. Medicine (Baltimore) 1997;76:53-61.   Back to cited text no. 1      
2.Shah SM, Howard RS, Sarkies NJ, Graham EM. Tuberculosis presenting as retinal vasculitis. J R Soc Med 1988;81:232-3.  Back to cited text no. 2  [PUBMED]  [FULLTEXT]  
3.Sanders MD, Graham EM. Retinal vasculitis. Postgrad Med J 1998;64:488-96.   Back to cited text no. 3      
4.Gupta A, Gupta V, Arora S, Dogra MR, Bambery P. PCR positive tubercular retinal vasculitis: Clinical characteristics and management. Retina 2001;21:435-44.  Back to cited text no. 4  [PUBMED]  [FULLTEXT]  
5.Rosen PH, Spalton DJ, Graham EM. Intraocular tuberculosis. Eye (Lond) 1990;4:486-92.  Back to cited text no. 5  [PUBMED]    
6.Hoh HB, Kong VY, Jaais F: Tubercular retinal vasculitic. Med J Malaysia 1998;53:288-9.  Back to cited text no. 6      
7.Madhavan HN, Therese KL, Gunisha P, Jayanthi U, Biswas J. Polymerase chain reaction for detection of Mycobacterium tuberculosis in epiretinal membrane in Eale's disease. Invest Ophthalmol Vis Sci 2000;41:822-5.  Back to cited text no. 7  [PUBMED]  [FULLTEXT]  


  [Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6], [Figure 7], [Figure 8]

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