Case report
Intraorbital apocrine hidrocystoma

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Abstract

A 33-year-old man reported an 18 months history of a progressive right eyelid swelling, a sensation of eye pain and headaches. He noted a visual discomfort. Physical examination showed right eyelid edema, without skin lesion. The patient's acuity was unchanged from the baseline; neither exophthalmia nor deficit in the visual field was noted. Magnetic resonance image showed an intraorbital, extraconal cystic lesion. Histopathologic examination revealed apocrine hidrocystoma.

Introduction

Hidrocystoma is a cystic tumor originating from a dilated sweat gland. The tumor is typically small and located predominantly on the face, particularly in the periorbital regions. We have been unable to find any report describing a hidrocystoma in the intraorbital region. The purpose of this paper is to report the unique occurrence of an orbital hidrocystoma and discuss its differential diagnosis with other more common orbital lesions.

Section snippets

Case report

A 33-year-old, previously healthy white man reported an 18 months’ history of a progressive right eyelid swelling, a sensation of eye pain and sometimes headaches. He noted visual discomfort occurring preferentially at the end of the day. Physical examination confirmed the right eyelid edema, with a common xanthelasma of the eyelid. The patient's acuity was unchanged from the baseline; neither exophthalmia nor deficit in the visual field was noted. Fundoscopy was normal and the general physical

Discussion

Hidrocystoma usually appears as a solitary mass on the face, particularly in the periorbital skin regions (the eyelid and the inner canthus). Tumors may arise on other areas of the head and neck [1] and have been reported to occur on the penis [2], in the axilla or shoulder [3], and in the pericoccygeal region [4]. Intraorbital location seems to be exceptional.

The pathogenesis is not entirely known but tends to appear during adulthood, grow slowly, and persist indefinitely. The lesion is

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