Congenital divided nevus of the eyelids is a rare form of melanocytic nevus which involves contiguous portions of the upper and lower eyelid margins unilaterally, hence the term ‘kissing nevus’. While usually present at birth, these nevi may also appear later in life. When the mass enlarges, it may cause cosmetic issues to the patient, as well as functional problems such as mechanical ptosis, ectropion, and epiphora.

We report three cases of congenital divided nevus of the eyelids, all presenting with unilateral upper and lower hyperpigmented lid masses since birth. The first case had an upper lid mass measuring 11 mm x 19 mm, and a lower lid mass measuring 55 mm x 47 mm, with both masses extending into the palpebral conjunctiva, and causing severe ptosis and corneal neovascularization due to chronic irritation. The second case presented with hyperpigmented masses at the lateral third of the right upper eyelid measuring 8 mm x 17 mm and of the lower eyelid measuring 9 mm x 15 mm on the lower lid with lashes growing through the masses. There was extension of the mass into the palpebral conjunctiva. The third case presented with a 23 x 18 mm hyperpigmented, well-circumscribed, verrucated mass at the medial half of the upper eyelid crossing the eyelid margin, and a 15 x 13 mm lesion at the medial third of the lower lid with the same characteristics, with small crusty lesions and clotted blood. All three patients underwent excision biopsy with lid reconstruction using full thickness skin grafts from the supraclavicular area. Six months postoperatively, the first case underwent a repeat full thickness skin graft due to graft contraction, and also received two sessions of fractional carbon dioxide (CO2 ) laser, two sessions of intralesional triamcinolone injections, and silicone gel application with further improvement of graft healing and scarring. The second case also underwent two sessions of intralesional steroid injection for scar management. During follow-up, which spanned 13 months for the first case, 10 months for the second case, and two months for the third case, improved functional and cosmetic outcomes were observed.

This case series highlights the outcomes of the most common surgical technique done for congenital divided nevi of the eyelids. Congenital divided nevi are usually diagnosed clinically and malignant degeneration is rare, hence lid reconstruction may be done without frozen section. The cases in the series were treated due to cosmetic and functional purposes, hence the importance of continuous post-operative follow-up to monitor for graft dehiscence, scar development, recurrence of the mass, malignant degeneration, and development of lid malposition. Additional procedures for scar management, such as CO2 laser and intralesional steroid injections, may be necessary to further enhance outcomes in complex cases. All three cases in this series exhibited improved functional and cosmetic outcomes post-operatively, with significant reduction in ptosis and scarring. Longterm follow-up revealed satisfactory recovery with minimal complications, with no recurrence nor malignant degeneration.

Basal cell nevus syndrome is a rare autosomal dominant disorder with a prevalence of between 1in 60,000 to 1in 120,000. This disorder is associated with a panoply of phenotypic that includes developmental anomalies and tumors particularly basal cell carcinoma. The genetic abnormality in almost all known cases is a mutation in the PATCHED] gene which is essential for normal body and limb patterning.? abnormalities We report a 50-year-old Filipina who suffered from multiple recurrent pigmented papules, plagues, nodules, and tumors on the face with the first tumor appearing at age 20.
Basal Cell Nevus Syndrome

A 3-year-old boy presented with bluish patch and scattered blue spots on the left side of his face. After several sessions of laser treatment, the azury patch in the periorbital area became even darker. Histopathology showed many bipolar, pigment-laden dendritic cells scattered in the papillary and upper reticular dermis. Immunohistochemically, these cells were positive for S100, SOX-10, melan-A, P16, and HMB-45. The positive rate of Ki-67 was less than 5%. Finally, the lesion was diagnosed with nevus of Ota concurrent with common blue nevus. Therefore, for cases of the nevus of Ota with poor response to laser treatment, the possible coexisting diseases should be suspected.
Male ; Humans ; Child, Preschool ; Nevus, Blue/pathology* ; Nevus of Ota/therapy* ; Skin/pathology* ; Face ; Skin Neoplasms/pathology*

Two male patients with bifid rib-basal cell nevus-jaw cyst syndrome (BCNS) were admitted to Department of Stomatology, the First Affiliated Hospital of Bengbu Medical College due to radiological findings of multiple low density shadows in the jaw. Clinical and imaging findings showed thoracic malformation, calcification of the tentorium cerebellum and falx cerebrum as well as widening of the orbital distance. Whole exon high-throughput sequencing was performed in two patients and their family members. The heterozygous mutations of c.C2541C>A(p.Y847X) and c.C1501C>T(p.Q501X) in PTCH1 gene were detected in both patients. Diagnosis of BCNS was confirmed. The heterozygous mutations of PTCH1 gene locus were also found in the mothers of the two probands. Proband 1 showed clinical manifestations of low intelligence, and heterozygous mutations of c.C2141T(p.P714L) and c.G3343A(p.V1115I) were detected in FANCD2 gene. Proband 2 had normal intelligence and no FANCD2 mutation. The fenestration decompression and curettage of jaw cyst were performed in both patients. Regular follow-up showed good bone growth at the original lesion, and no recurrence has been observed so far.
Humans ; Male ; Basal Cell Nevus Syndrome/diagnosis* ; Mutation ; Nevus ; Patched-1 Receptor/genetics* ; Pedigree ; Ribs/abnormalities*

Introduction: Epidermal nevi are hamartomas of the epidermis and papillary dermis that are usually present during the first years of life. Rarely, malignant transformations develop in association with epidermal nevi. Few cases have been reported worldwide, however the lifetime risk and incidence are unknown. Case Report: This is a case series about basal cell carcinoma arising on epidermal nevus. The first patient is a 42-year-old Filipino female, who presented with a verrucous plaque at birth on the left temple which then developed multiple, discrete to confluent, grayish, papules and nodules on the surface. Histological examination revealed nevus sebaceus and basal cell carcinoma, pigmented type. The second patient is a 53-year-old Filipino male, who presented with a papillomatous plaque on the left temple since the first year of life which then increased in size along with the presence of a solitary bluish-black macule noted by dermoscopic examination. Histologic examination showed verrucous epidermal nevus and basal cell carcinoma, pigmented type. Conclusion Two rare cases of basal cell carcinoma arising on epidermal nevus are reported. Despite the rarity of malignant transformation on epidermal nevus, any suspicious growth warrants a biopsy. Knowledge of these cases is important for probing suspicious growth over an epidermal nevus that would prompt early treatment before these lesions progress in size making it harder to manage.
epidermal nevus ; nevus sebaceus ; verrucous epidermal nevus ; basal cell carcinoma

Nevus-like basal cell carcinoma syndrome (NBCCS) is a rare autosomal dominant disease characterized by the occurrence of multiple maxillofacial keratocysts, basal cell carcinoma, child medulloblastoma, and various skeletal and soft tissue dysplasia. In 2020, a patient with NBCCS dominated by facial basal cell carcinoma was admitted to Xiangya Hospital of Central South University. The patient was an elderly woman. Ten years ago, the systemic mass appeared, especially on the face, but it was not treated. Later, these masses gradually increased in volume and number, and showed invasive properties. The nasal mass was broken and suppurated, seriously affecting the patient's life quality. The patient came to the hospital to improve the symptoms. Staphylococcus aureus and Providencia rettgeri were cultured in the patient's nasal secretions. Nasal sinus enhanced MRI showed that the subcutaneous soft tissue of the right cheek and the anterolateral mucosa of the left nasal cavity were invaded, indicating multiple malignant skin lesions. After admission, local anesthesia was performed and some masses were removed. Pathological examination of the mass showed basal cell carcinoma. After general anesthesia, multiple masses were resected. The postoperative pathological examination showed that multiple basal cell carcinoma invaded the deep dermis near subcutaneous fat layer. Combined with the results of clinical and immunohistochemical examination, the patient was diagnosed as NBCCS. There were no clear tumor thrombus in the vessel and no nerve invasion. No recurrence or new tumor was found after 1 year follow-up. The incidence rate of NBCCS is low and clinical symptoms are different. The patient's life quality is poor and the patient needs long-term individualized treatment.
Aged ; Basal Cell Nevus Syndrome/surgery* ; Carcinoma, Basal Cell/surgery* ; Child ; Female ; Hamartoma Syndrome, Multiple ; Humans ; Magnetic Resonance Imaging

Summary Halo nevi (HN) are benign skin lesion that represent melanocytic nevi in which an inflammatory infiltrate develops, resulting in zone of depigmentation around nevus. Although Sutton originally described the lesion in 1916 as leukoderma acquista centrifugum, the lesions were noted earlier as evidenced in the painting by Matthias Grunwald cica 1512-1516. The prevalence of HNs in the general population is 1%, and HNs usually appear in childhood or early adulthood. Up to 26% of patients with HN have vitiligo, but in very few instances is there an association of HN around congenital melanocytic nevi (CMN) and vitiligo. The exact mechanisms responsible for the development of vitiligo and HN and its resolution are unknown. One of the most accepted hypotheses considers that both phenomena are a result of a self-limited immunologic response to pigmented cells, either in the “normal” skin or within the melanocytic lesion. Hereby we present a rare case report of a girl with halo CMN and infraorbital vitiligo. The halo CMN was excised which was followed by spontaneous improvement of vitiligo.
Vitiligo ; Nevus, Halo

Objective: To detect the SMO mutations in odontogenic keratocyst (OKC) and to explore the mechanism behind. Methods: Patients with OKC who received treatment in the Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology,Peking University, from September 2012 to June 2017 were enrolled. OKC samples from 10 patients diagnosed as naevoid basal cell carcinoma syndrome (NBCCS)-related OKC (4 females and 6 males) and 20 patients diagnosed as sporadic OKC (7 females and 13 males) were collected. Genomic DNAs were extracted from fibrous capsules and epithelial lining respectively. SMO mutations were detected and analyzed by Sanger sequencing. Results: Three SMO mutations were found in one NBCCS-associated OKC who carrying c.2081C>G (p.P694R) mutation) and two sporadic OKC who carrying c.907C>T (p.L303F) mutation and c.1247_1248delinsAA (p.G416E), respectively), among which the first two mutations were novel mutations that had not been reported before. Besides, two mutations in sporadic OKC were not paired with PTCH1 mutations. Conclusions: In addition to PTCH1 gene mutations, SMO gene mutations also exist in OKC which might be related to the development of OKC.
Basal Cell Nevus Syndrome/genetics* ; Female ; Humans ; Male ; Mutation ; Odontogenic Cysts/genetics* ; Odontogenic Tumors/genetics* ; Smoothened Receptor/genetics*

Basal cell nevus syndrome (BCNS), also known as Gorlin-Goltz syndrome, is a rare autosomal dominant genetic disease. It is thought to be caused by a mutation in the PTCH1 gene, and its incidence is 1/57 000 to 1/256 000. The case of a 7-year-old patient with BCNS and Duchenne muscular dystrophy was reported in this paper.
Basal Cell Nevus Syndrome/diagnosis* ; Child ; Humans ; Muscular Dystrophy, Duchenne ; Mutation

Dermoscopy ; Diagnosis, Differential ; Face ; Humans ; Nevus, Pigmented ; Skin Neoplasms/diagnostic imaging* ; Wood