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Abstract

¸ñÀû: ¿ø¹ß ±¹¼Ò¾Æ¹Ð·ÎÀ̵åÁõÀº ¼±Çà Àü½ÅÁúȯ µ¿¹Ý ¾øÀÌ ºñÁ¤»ó ´Ü¹éÁúÀÌ ±¹¼ÒÀûÀ¸·Î Á¶Á÷¿¡ ħÂøµÇ¾î »ý±â´Â ÁúȯÀÌ´Ù. ÀúÀÚµéÀº ¿Ü¾È±Ù¿¡ ¹ß»ýÇÑ ¿ø¹ß ¾Æ¹Ð·ÎÀ̵åÁõÀ» °æÇèÇÏ¿© À̸¦ º¸°íÇÏ°íÀÚ ÇÑ´Ù.

Áõ·Ê¿ä¾à: 51¼¼ ¿©ÀÚ È¯ÀÚ°¡ º¹½Ã¸¦ ÁÖ¼Ò·Î ³»¿øÇÏ¿´´Ù. ¿À¸¥´«¿¡ 3 mmÀÇ ¾È±¸µ¹Ãâ ¹× 25ÇÁ¸®Áòµð¿ÉÅÍÀÇ »ó»ç ½Ã ¼Ò°ßÀ» º¸¿´À¸¸ç ¾È±¸¿îµ¿°Ë»ç»ó ¿ì¾ÈÀÇ ÇÏÀüÀå¾Ö°¡ ÀÖ¾ú´Ù. ¾È¿Í ÀÚ±â°ø¸í¿µ»ó°Ë»ç¿¡¼­ ¿À¸¥´« ÇÏÁ÷±Ù ¹× ³»Á÷±ÙÀÇ Å©±â°¡ Áõ°¡µÇ¾î ÀÖ°í Á¶¿µÁõ°­ ¼Ò°ßÀ» º¸¿´´Ù. ³»Á÷±Ù¿¡¼­ ±ÙÀ° ³» ¼®È¸È­ ¼Ò°ßÀÌ °üÂûµÇ¾ú´Ù. °æÇèÀû Àü½Å½ºÅ×·ÎÀ̵å Ä¡·á¸¦ ½ÃÇàÇÏ¿´À¸³ª ¹ÝÀÀÀÌ ÁÁÁö ¾Ê¾Æ ¿ì¾ÈÀÇ ¿Ü¾È±Ù Àý°³ »ý°ËÀ» ½ÃÇàÇÏ¿´´Ù. º´¸®Á¶Á÷°Ë»ç»ó H&E ¿°»ö¿¡¼­ ºÐÈ«ºû °áÀý¼º ħÂø¹°ÀÌ °üÂûµÇ¾úÀ¸¸ç Congo-red ¿°»ö ¹× Æí±¤Çö¹Ì°æ°Ë»ç»ó ¾ç¼º ¼Ò°ßÀ» º¸¿© ¾Æ¹Ð·ÎÀ̵åÁõÀ» Áø´ÜÇÒ ¼ö ÀÖ¾ú´Ù. ÀÌÂ÷¼º ¾Æ¹Ð·ÎÀ̵åÁõ ¹èÁ¦¸¦ À§ÇØ ½ÃÇàÇÑ ÈäºÎ ¹æ»ç¼±°Ë»ç, ½ÉÀåÃÊÀ½ÆÄ°Ë»ç, Ç÷¾× ¹× ¼Òº¯°Ë»ç»ó »ó½ÂµÈ ·ù¸¶Æ¼½ºÀÎÀÚ ¿Ü ´Ù¸¥ ÀÌ»ó ¼Ò°ßÀ» º¸ÀÌÁö ¾Ê¾Ò´Ù.

°á·Ð: ¾È±¸µ¹ÃâÀÌ Àִ ȯÀÚ¿¡¼­ ¿Ü¾È±Ùºñ´ë¿Í ¿Ü¾È±Ù¸¶ºñ¸¦ º¸À̴ ħÀ±¼º ¿Ü¾È±ÙÁõÀÌ ÀÖ´Â °æ¿ì ¾Æ¹Ð·ÎÀ̵åÁõÀ» °¨º° Áø´ÜÀÇ Çϳª·Î °í·ÁÇÏ¿©¾ß ÇÑ´Ù.

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.

Conclusions: When infiltrative myopathy of the extraocular muscle is suspected in a patient with exophthalmos and enlargement of extraocular muscles, primary amyloidosis should be considered in the differential diagnosis.

Å°¿öµå

Extraocular muscles; Infiltrative myopathy; Primary amyloidosis

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