J Korean Ophthalmol Soc.  2017 Mar;58(3):333-336. 10.3341/jkos.2017.58.3.333.

Solitary Pigmented Plexiform Neurofibroma in Lower Eyelid: A Case Report

  • 1Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Korea. wchoi82@hanmail.net
  • 2Department of Pathology, Chonnam National University Medical School, Gwangju, Korea.


Solitary plexiform neurofibroma of the eyelid without neurofibromatosis is a rare disease. We report a case of solitary plexiform pigmented neurofibroma of the eyelid without neurofibromatosis.
A 12-year-old male visited our clinic with a painless palpable subcutaneous mass on the right lower eyelid. He had a history of Batter syndrome and attention deficit hyperactivity disorder. On initial presentation, clinical features regarding neurofibromatosis such as Lisch nodule, optic nerve glioma, or high myopia were not observed. We performed excision and biopsy of the lower lid mass under general anesthesia. Macroscopically, the tumor was 4.0 × 1.5 × 1.5 cm in size with irregular nodules. Microscopically, the tumor consisted of multiple, variably sized tortous enlarged nerve fascicles with clusters of pigmented cells. Immunohistochemical results revealed expression of S-100 protein. Pigmented cells express both S-100 and melan-A proteins, while nonpigmented cells express S-100 protein only. The tumor was finally diagnosed as plexiform pigmented neurofibroma. Dermatological evaluation revealed no evidence of systemic neurofibromatosis.
Plexiform neurofibroma should be considered in the differential diagnosis of an eyelid mass, even if the patient does not have a history or clinical features of neurofibromatosis. Plexiform neurofibroma can be successfully managed with surgical excision.


Eyelid neurofibroma; Neurofibromatosis; Plexiform neurofibroma

MeSH Terms

Anesthesia, General
Attention Deficit Disorder with Hyperactivity
Diagnosis, Differential
MART-1 Antigen
Neurofibroma, Plexiform*
Neurofibromatosis 1
Optic Nerve Glioma
Rare Diseases
S100 Proteins
MART-1 Antigen
S100 Proteins


  • Figure 1. External photograph. Non-tender, palpable mass was observed on the right lower eyelid.

  • Figure 2. Enhanced Orbital computed tomography. Images showed about 3.8 × 1.5 × 1.5 cm sized non-enhanced cystic lesion at subcutaneous tissue of the right lower lid and focal skin thickening. (A) Axial view. (B) Coronal view.

  • Figure 3. The patient underwent surgical resection of the tumor. (A) Photomicrograph of plexiform pigmented neurofibroma (Hematoxylin-eosin, original magnification ×40). Multiple, variable sized tortuous hypertrophic nerves. (B) High power photo-micrograph of plexiform pigmented neurofibroma (Hematoxylin-eosin, original magnification ×200). Clusters of melanin pig-mented cells surrounding hypertrophied nerve of neurofibroma. (C) High power photomicrograph (S-100, original magnification ×200). Pigmented and nonpigmented tumor cells expressing S-100 protein. (D) High power photomicrograph (Melan-A, original magnification ×200) Pigmented cells with strong immunoreactivity for Melan-A, in contrast to nonpigmented cells.



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