Clinical Features of Compound Nevus

PURPOSE: To evaluate the clinical features of compound nevus. METHODS: A retrospective chart review of the medical records for 32 eyes of 32 patients who were clinically diagnosed as having a compound nevus from February 2011 to February 2017 was performed. RESULTS: The average follow-up period was 21.38 (range, 6–70) months for the 32 patients (9 males and 32 females), and the average age was 21 (range, 7–41) years old. The development or detection of a nevus varied between patients. There were no associated symptoms except for one patient who experienced foreign body sensation. An increase in size was noted in 5 cases (15%). The most common location in the conjunctiva was bulbar in 30 cases (93.8%), and the most common quadrant was temporal in 21 cases (65.6%) followed by nasal conjunctiva in 11 cases (34.4%). The most common locations of anterior margin and posterior margin were on the limbus (56%) and bulbar conjunctiva (92%), respectively. The mean horizontal length was 2.59 ± 1.9 mm and the mean vertical length was 2.62 ± 2.1 mm. All horizontal and vertical lengths were within 5 mm. An elevated nevus was observed in 25 cases (78.1%), and 18 cases (56.3%) had cystic lesions. The color of the nevi were largely brown (26 cases, 81.3%), and 29 cases (90.6%) had feeder vessels. Excisional biopsy and histologic exam were performed in 22 cases (68.8%). The purpose of the treatment was mostly cosmetic (20 cases, 93.8%) or for differential diagnosis with malignant melanoma (2 cases, 6.3%). In the surgery group, no one showed recurrence or any significant complications. CONCLUSIONS: A conjunctival compound nevus is a benign conjunctival mass and can be found in all age groups. Compound nevus can be diagnosed with clinical features, and complete excision with histological exam is an appropriate treatment to differentiate from malignant melanoma.

Trichoblastoma and Compound Nevus Arising from Nevus Sebaceus / 대한피부과학회지

Nevus sebaceous is a common congenital cutaneous hamartoma occurring mainly on the face and scalp. It is well known that secondary neoplasms can be easily observed in the primary lesion. However, a case of trichoblastoma and compound nevus concurrently arising from nevus sebaceous has not been previously reported. A 26-year-old woman presented with a well-demarcated atrophic skin-colored plaque on her scalp from birth. On the plaque, a black dome-shaped round nodule and a brownish nodule with irregular margins were found one week previously without subjective symptoms. Histopathological examination of the central plaque lesion revealed epidermal hyperplasia and hyperplasia of the sebaceous glands and eccrine glands. In addition, ectopic, dilated apocrine glands were revealed in the lower dermis, and the hair follicles remained small and primordial, consistent with nevus sebaceous. A section of the black nodule showed palisading basaloid cells surrounded by abundant fibrous stroma. Nests of nevus cells were found at the dermo-epidermal junction and dermis in the brownish nodule. Based on these findings, the black nodule and brownish nodule were diagnosed as trichoblastoma and compound nevus, respectively. Herein, we report an interesting case of trichoblastoma and compound nevus concurrently arising from nevus sebaceous, which is, to our knowledge, the first such report in the dermatologic literature.

A Case of a Compound Nevus That Developed as Papillomatous Melanocytic Nevus / 대한피부과학회지

Papillomatous melanocytic nevus is a clinical type of melanocytic nevus, and this has also been described as keratotic melanocytic nevus or seborrheic wart-like melanocytic nevus. Although the pathogenesis of this phenomenon is not well recognized, some hypotheses do exist, such as it is an abnormality that occurs at some stages in embryonic development. There is also the possibility that dermo-epidermal interactions exist. On our review of the medical literature, there are only four Korean cases of intradermal nevus that have developed as papillomatous melanocytic nevi. We report here on a Korean case of a compound nevus with features of papillomatous melanocytic nevus.

A Case of Compound Nevus of the External Auditory Canal / 대한이비인후과학회지

Compound nevus is considered to be a common benign cutaneous tumor which is composed of nevus cells containing melanin pigment. However, compound nevus which has junctional activity has been described as actual precursors of malignant melanoma. Recently we experienced a case of compound nevus of the auditory canal, causing ear canal obstruction, intermittent hearing impairment and otorrhea in a 34-year-old female patient. The compound nevus was treated with a wide excison and full thickness skin graft by endaural approach.