過剰涙丘の2例

Two cases of supernumerary caruncle

要約　目的：稀有な過剰涙丘の症例の報告。

症例：30歳男性と44歳女性が，いずれも左下眼瞼の結膜腫瘤による異物感を自覚して紹介受診した。

所見と経過：それぞれ左下眼瞼結膜に，4mm×6mmおよび3mm×5mmの隆起性腫瘤があり，その表層に毛を含み，その表面に黄白色の微小結節が散在していた。両症例とも腫瘤を単純切除し，自覚症状は消失した。術後それぞれ4か月と34か月後，再発はない。病理組織学的に，腫瘤の表面は杯細胞を伴う重層円柱上皮で覆われ，実質に硬い結合織があり，その中に毛包，脂腺，副涙腺とリンパ球の浸潤があり，涙丘の所見と合致していた。

結論：今回の過剰涙丘の2症例は，いずれも片眼性，正常涙丘が共存するなどの特徴があり，悪性の所見はなかった。

Abstract　Purpose：To report two cases of supernumerary caruncle.

Cases：Two cases, a 30-year-old male and 44-year-old female, were referred to us for foreign body sensation presumably due to a tumor in the palpebral conjunctiva in the left lower eyelid.

Findings and Clinical Course：Both cases showed an oval tumor in the lower palpebral conjunctiva in the left eye measuring 4 mm×6 mm and 3 mm×5 mm respectively. The tumor was covered by numerous fine yellowish-white nodules. Hairs were present in the tumor. Both cases were treated by simple resection of the tumor. Histopathological studies showed findings simulating normal caruncle, including stratified columnar epithelium, hair follicles, goblet cells, fat, accessory lacrimal glands, and lymphocyte infiltration.

Conclusion：The present two cases of supernumery caruncle showed, as characteristic findings, unilateral presence, postnatal occurrence, presence of normal caruncle, and absence of tendency to malignancy.