Abstract
Purpose
Primary localized amyloidosis is a disease characterized by the deposition of abnormal protein fibrils in a specific tissue without systemic involvement. We report a rare case of primary amyloidosis involving the extraocular muscle.
Case summary
A 51-year-old female visited our clinic due to diplopia. There was a 3 mm exophthalmos and restricted ocular motility in infraduction. Right hypertropia with 25 prism diopters was observed in the primary position. Orbital imaging scans showed fusiform enlargement of the inferior and medial rectus muscles with significant contrast enhancement in the right eye. A calcified nodule embedded in the medial rectus muscle was observed. Empirical steroid pulse therapy was conducted, but the patient showed little response. Subsequently, an incisional biopsy of inferior rectus muscle was performed. A histopathological examination showed amyloid deposits in hematoxylin and eosin staining, and a positive birefringence in Congo-red staining under polarized light, confirming amyloidosis. A systemic work up showed no evidence of systemic amyloidosis besides increased levels of rheumatoid factor.
References
1. Aryasit O, Preechawai P, Kayasut K. Clinical presentation, treatment, and prognosis of periocular and orbital amyloidosis in a university-based referral center. Clin Ophthalmol. 2013; 7:801–805.
2. Tyradellis C, Peponis V, Kulwin DR. Surgical management of recurrent localized eyelid amyloidosis. Ophthalmic Plast Reconstr Surg. 2006; 22:308–309.
3. Picken MM. Amyloidosis-where are we now and where are we heading? Arch Pathol Lab Med. 2010; 134:545–551.
4. Gean-Marton AD, Kirsch CF, Vezina LG, Weber AL. Focal amyloidosis of the head and neck: evaluation with CT and MR imaging. Radiology. 1991; 181:521–525.
5. Chung EH, Oum BS, Lee SH, Hong SH. A case of corneal amyloidosis. J Korean Ophthalmol Soc. 1983; 24:383–386.
6. Kim DS, Kim CH, Kim YK. A case of corneal amyloidosis. J Korean Ophthalmol Soc. 1996; 37:554–558.
7. Park YH, Lee JY, Chung SK, Myong YW. Corneal amyloidosis developed after penetratioin keratoplasty. J Korean Ophthalmol Soc. 1998; 39:3093–3097.
8. Nam H, Cho KR. Primary systemic amyloidosis involved the conjunctiva. J Korean Ophthalmol Soc. 1991; 32:604–608.
9. Song BR, Kim YK, Yoo JH, Chu YC. Primary localized amyloidosis of bulbar conjunctiva and cornea. J Korean Ophthalmol Soc. 1993; 34:352–356.
10. Lee JH, Kim YD. Primary localized orbital amyloidosis. J Korean Ophthalmol Soc. 2001; 42:1793–1797.
11. Kim WT, Kim JS, Park HB. A case of vitreous amyloidosis. J Korean Ophthalmol Soc. 2003; 44:1948–1953.
12. Choi HJ, Choung HK, Khwarg SI. Primary localized amyloidosis of the lacrimal gland. J Korean Ophthalmol Soc. 2004; 45:1567–1572.
13. Kim YT, Kim JY, Kim YD. Primary localized amyloidosis of the lacrimal gland. J Korean Ophthalmol Soc. 2004; 45:1573–1577.
14. Kim JT, Kim EY, Lee HI, et al. A report of localized corneal amyloidosis secondary to the trichiasis. J Korean Ophthalmol Soc. 2006; 47:2035–2040.
15. Kim B, Song JH, Yang SW, Kim MS. A case of bilateral conjunctival amyloidosis treated with mass excision and cryotherapy. J Korean Ophthalmol Soc. 2011; 52:628–632.
16. Lyu IJ, Woo KI, Kim YD. Primary Orbital MALT lymphoma associated with localized amyloidosis. J Korean Ophthalmol Soc. 2013; 54:1109–1113.
17. Mora-Horna ER, Rojas-Padilla R, López VG, et al. Ocular adnexal and orbital amyloidosis: a case series and literature review. Int Ophthalmol. 2016; 36:281–298.
18. Demirci H, Shields CL, Eagle RC Jr, Shields JA. Conjunctival amyloidosis: report of six cases and review of the literature. Surv Ophthalmol. 2006; 51:419–433.
19. Mombaerts I, Rose GE, Verity DH. Diagnosis of enlarged extraocular muscles: when and how to biopsy. Curr Opin Ophthalmol. 2017; 28:514–521.
20. Vargas ME, Warren FA, Kupersmith MJ. Exotropia as a sign of myasthenia gravis in dysthyroid ophthalmopathy. Br J Ophthalmol. 1993; 77:822–823.
21. Chen CS, Lee AW, Miller NR, Lee AG. Double vision in a patient with thyroid disease: what's the big deal? Surv Ophthalmol. 2007; 52:434–439.
22. Shafi F, Mathewson P, Mehta P, Ahluwalia HS. The enlarged extraocular muscle: to relax, reflect or refer? Eye (Lond). 2017; 31:537–544.
23. Trokel SL, Hilal SK. Recognition and differential diagnosis of enlarged extraocular muscles in computed tomography. Am J Ophthalmol. 1979; 87:503–512.
24. Patrinely JR, Osborn AG, Anderson RL, Whiting AS. Computed tomographic features of nonthyroid extraocular muscle enlargement. Ophthalmology. 1989; 96:1038–1047.
25. Lacey B, Chang W, Rootman J. Nonthyroid causes of extraocular muscle disease. Surv Ophthalmol. 1999; 44:187–213.
26. Holmström GE, Nyman KG. Primary orbital amyloidosis localised to an extraocular muscle. Br J Ophthalmol. 1987; 71:32–33.
27. Erie JC, Garrity JA, Norman ME. Orbital amyloidosis involving the extraocular muscles. Arch Ophthalmol. 1989; 107:1428–1429.
28. Monteiro ML, Gonçalves AC, Bezerra AM. Isolated primary amyloidosis of the inferior rectus muscle mimicking Graves' orbitopathy. Einstein (Sao Paulo). 2016; 14:553–556.
29. Shah VS, Cavuoto KM, Capo H, et al. Systemic amyloidosis and extraocular muscle deposition. J Neuroophthalmol. 2016; 36:167–173.
30. Okamoto K, Ito J, Emura I, et al. Focal orbital amyloidosis presenting as rectus muscle enlargement: CT and MR findings. AJNR Am J Neuroradiol. 1998; 19:1799–1801.
31. Stack RR, Vote BJ, Evans JL, Elder MJ. Bilateral ptosis caused by localized superficial eyelid amyloidosis. Ophthalmic Plast Reconstr Surg. 2003; 19:239–240.
32. Kourelis TV, Kyle RA, Dingli D, et al. Presentation and outcomes of localized immunoglobulin light chain amyloidosis: the Mayo clinic experience. Mayo Clin Proc. 2017; 92:908–917.