Related Experiment Video
Updated: Jun 18, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
Published on: August 9, 2024
Subepidermal calcified nodules of the eyelid
Hyunjin Jane Kim1, Paul B Johnson, Mark Kropinak
1Department of Ophthalmology, New Jersey Medical School, Newark, New Jersey, USA.
Abstract:
Subepidermal calcified nodule uncommonly involves the eyelid, and the authors report their experience with 9 cases of this entity. Most lesions appeared as solitary, raised, tan, or white nodules on the upper eyelid or medial canthal skin of healthy, young patients. The diagnosis was not suspected in any of the patients. The most common preoperative diagnosis was a "cyst." Excisional biopsy was performed in all cases and was curative with the exception of one recurrence. Histopathologic evaluation showed basophilic deposits beneath acanthotic and papillomatous epidermis on hematoxylin and eosin-stained preparations. The deposits stained with von Kossa's stain for calcium and were surrounded by foreign body reaction. Ophthalmologists should be aware that subepidermal calcified nodule is a benign lesion that can occur in the eyelid skin.
Related Concept Videos
Accessory Structures of the Eye
Accessory Structures of the Skin: Sebaceous Glands
These glands that produce the oils on the skin and hair are holocrine glands. The mature...
Papillary Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
Cells of the Epidermis
The cells in all these layers except the stratum basale are called keratinocytes, a type of cell that manufactures and stores the protein keratin. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from...
Accessory Structures of the Skin: Nails
The main components of a nail include the following.
Nail Plate: The nail plate is the visible portion of the nail that extends beyond the fingertips or toes. It is a hard, translucent...
Acne Infection

