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A Case of Atypical Cogan's Syndrome and Review of Literature

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A Case of Atypical Cogan's Syndrome and Review of Literature Tr. J. of Medical Sciences 28 (1998) 705-707 © TÜBİTAK Short Report Murat AKSU1 A Case of Atypical Cogan’s Syndrome and Review Ali Özdemir ERSOY1 Sarper KARAKÜÇÜK2 of Literature Hakkı DOĞAN2 Departments of 1Neurology and 2Ophthalmology, Faculty of Medicine, Erciyes University, Key Words: Cogan’s Syndrome; vasculitis; Kayseri-Turkey Received: January 27, 1997 keratitis. Cogan’s Syndrome (CS) is a disease affecting young On physical examination, bilateral deafness was adults and consists of episodes of acute interstitial detected. Rinne tests were negative and auditory-evoked keratitis with vestibuloauditory dysfunction. This potential was not detected in either ear. Bilateral total syndrome was originally described in 1945 by Cogan as a deafness was detected through pure tone audiometry. A disorder of the eyes and ears, characterized by complete blood count and urinanalysis were found to be nonsyphilitic interstitial keratitis with deafness. Sporadic normal. Serologic tests for syphilis were negative. reports showing the development of vasculitis in patients Electroencephalography, cranial computerized with eye and ear disease have been published over the last tomography and visual-evoked potentials were also 30 years. When ocular signs, in addition to interstitial normal. Echocardiography revealed that the heart was keratitis, are present, the syndrome is referred to as hyperdynamic. atypical Cogan’s Syndrome. Although cases of scleritis and High-dose prednisolone (100mg/day) was initiated. posterior scleritis accompanying interstitial keratitis have The patient also received topical prednisolone eye drops 8 been reported in the literature (1, 2), iridocyclitis is times daily and cycloplegics as well as warm compresses, extremely rare (3). Presented below is a report of an 3 times daily. The iridocyclitis was completely resolved atypical CS with iridocyclitis, and a review of the within ten days. After three months, the interstitial literature to familarize doctors with this unusual but keratitis showed significant improvement and visual treatable disorder. acuity increased bilaterally by 4 to 5 lines. A 17-year-old man was admitted to hospital on June Ophthalmoscopy did not reveal any abnormality in either 25, 1996, suffering from deafness, a burning sensation eye. In general, good progress was observed. However, in the eyes, redness of the eyes and blurring of the vision. total deafness remained a major problem, showing no He had been well until a week before, when he began to improvement despite therapy. experience wheezing. He was admitted to a local hospital, CS was first described by Cogan in 1945. It is but deafness and blurring of the vision were added to the characterized by nonsyphilitic interstitial keratitis and clinical picture and the patient was referred to our vestibuloauditory dysfunction. The average age for the hospital. onset of the disease is twenty-five, but it has been An ophthalmologic examination revealed that visual reported in patients between 4 and 63 years of age (4). acuity was 0.2 bilaterally. Conjunctival hyperemia and Our patient was 17 years old and did not show any clinical mild ciliary injection, and bilateral interstitial keratitis, as or laboratory evidence of syphilis. well as iridocyclitis with three positive cells in the anterior The primary ocular manifestation of typical CS is chamber were detected with a slit lamp examination. chronic bilateral interstitial keratitis. Keratitis is Intraocular pressures were within the normal limits. manifested by patchy infiltrates of the deep corneal Ophthalmoscopy at the acute stage was not possible strome. Atypical forms of CS have been described with because of anterior segment reaction. There was no bilateral posterior scleritis (1). However, iridocyclitis history of Behçet’s disease or other vasculitic disorders. occuring as the accompanying ocular lesion is extremely 705 A Case of Atypical Cogan’s Syndrome and Review of Literature rare. Klausen et al. (3) reported such a case in 1992 and, Ishii et al. reported that the ligamentum spirale cochlea to our knowledge, ours is the second case with was infiltrated with plasma cells and lymphocytes in CS; iridocyclitis accompanying interstitial non-syphilitic endolymphatic hydrops in the cochlea, collapse of the keratitis. The visually evoked potential (VEP) may be saccule and fibrosis in the posterior semicircular canal normal, as was pointed out by Magni et al. (5). Our were also described by the same authors (10). patient also had a normal VEP. The presence of lymphocytes and plasma cells in the Vestibuloauditory involvement typically begins conjunctiva and cornea suggests immune-mediated unilaterally with hearing loss and tinnitus, accompanied damage. Anterior uveitis, detected in this case, may also by vertigo, nausea, vomiting, ataxia and nystagmus (6). suggest a possible immune mechanism. However, the Vestibuloauditory dysfunction may occur concomitantly exact mechanism has yet to be revealed. CS has been with the visual symptoms or they may precede or follow detected in a patient with antiphospholipid antibodies the onset of visual symptoms by as much as three (11). CS associated with Crohn’s disease has also been months. Although hearing loss is complete in CS, reported; immune-mediated mechanisms again were sometimes it may be preceded by exacerbations and thought to play a major pathogenic role (12). An remissions. Similar involvement of the other ear often interesting clinical entity, autoimmune sensorineural follows within the next few weeks or months, leaving the hearing loss, is also believed to be closely related to patient permanently deaf. Hearing tests in the early Cogan’s syndrome (13, 14, 15). stages of the disease show cochlear involvement. Caloric There is no effective therapy for CS. As for the tests usually produce negative results. In some patients management of keratitis, topical steroids are beneficial. with CS, small calcified obliterations were detected with The treatment of uveitis, if present, is not different from computerized tomography and a high signal inside the the classical uveitis management, involving topical membranous labyrinth was observed on T1 weighted steroids, mydriatics and cycloplegics as well as warm magnetic resonance images (7). Cranial computerized compresses whenever necessary. Our case also responded tomography in this case was normal. well to such therapy. Systemic corticosteroids are A review of 109 cases revealed that 72 percent of indicated in the early treatment of acute deafness in CS. patients had clinical manifestations beyond the Therefore, one to two mg/kg of oral prednisone may be ophthalmic, auditory and vestibular signs (8). The most administered for 2 to 4 weeks. If hearing is improved by important systemic complication of CS is aortic valve this treatment, corticosteroids should be continued to be involvement with acute aortitis in up to 10 percent of taken on alternate days. Hearing did not improve in our patients. In our case, echocardiography showed that the case and there are other similar examples of such in the heart was hyperdynamic. Other systemic complications literature (16). are unexplained fever (34%), heart disease (25%), Here a case of atypical CS has been described and the gastrointestinal signs (25%), musculoskeletal relevent literature reviewed. The importance of early involvement (23%), hypertension (9%) and cerebral diagnosis and treatment to prevent hearing loss have artery occlusion (5%). The patient in this case did not been emphasized once more. have these complications. The pathogenesis of CS has not yet been explored. Autopsy findings revealed aortitis with involvement of all Correspondence Author: layers of the aorta, secondary heart and kidney infarction, Murat AKSU and necrotizing angiitis in the dura, brain, gastrointestinal Neurology Department tract, spleen and kidneys as well as focal degeneration of arterial walls at the extremities and lymphocyte and Faculty of Medicine, plasma cell infiltration in deep layers of the cornea (9). Erciyes University References 1. Shah P, Luqmani RA, Murray PI, Honan 2. McGavin DD, McNeill J. Scleritis and 3. Klausen OG, Franzen G, Berensten S. WP, Corridan PG, Emery P. Posterior perceptive deafness: case report. Ann Hearing loss in autoimmune diseases. scleritis an unusual manifestation of Ophthalmol; 9(10): 1287-1289, Tidsskr Nor Laegeforen 112(24): Cogan’s syndrome. Br J Rheumatol 33: 1977. 3092-3094, 1992. 774-5, 1994. 706 M. AKSU, A. Ö. ERSOY, S. KARAKÜÇÜK, H. DOĞAN 4. Podder S, Shepherd RC. Cogan’s 9. Kanatani M, Nakamura R, Kurokawa K, 13. McCabe BF Autoimmune sensorineural syndrome: a rare systemic vasculitis. Taoda M, Nemoto Y. Hypopituitarism hearing loss. Ann Otol Rhinol Laryngol; Arch Dis Child 71: 163-4, 1994. associated with Cogan syndrome; high 88(5 Pt 1): 585-589, 1979. dose glucocorticoid therapy reverses 5. Magni R, Spadea L, Pece A, Durante A, 14. Kanzaki J: Immune-mediated pituitary swelling. Jpn J Med 30: 164- Mansutti L, Brancato R. sensorineural hearing loss Acta 9, 1991. Electroretinographic findings in Otolaryngol Suppl (Stockh), 514: 70-2, congenital oculomotor apraxia (Cogan’s 10. Ishii T, Watanabe I, Suzuki J. Temporal 1994. syndrome). Doc Opthalmol, 86: 259- bone findings in Cogan’s syndrome. 15. Hughes GB, Kinney SE, Barna BP, 66, 1994. Acta Otolaryngol Suppl (Stockh) 519: Tomsak RL, Calabsrese LH. 118-23, 1995. 6. Haynes FB, Kupper MI, Mason P, Fauci Autoimmune reactivity in Cogan’s AS. Cogan syndrome: Studies in 11. Casoli P, Tumiati
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