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This study found that Polyomavirus A2 infection in mice led to the development of pilomatricomas in hair follicles, with the virus replicating initially in the skin and later infecting matrix cells.

In this case report, a 25-year-old woman with VKHD experienced an unusual occurrence of vellus-like hair growth on her normally hairless palm, observed twice over two years, expanding the known integumentary manifestations of VKHD.

This report presents the first known case of a proliferating hybrid cyst containing both epidermoid and trichilemmal components on the scrotum of a 44-year-old man.

This study reviewed existing literature and reported two cases of perinevoid alopecia, suggesting that melanocyte antigens may be involved in its development.

This review discusses the diagnosis and treatment of pityriasis rubra pilaris and reports no new clinical results.

In this study, dermoscopy was suggested as a potentially useful tool for improving the clinical recognition of pilomatricoma.

This research observed that multifocal pseudoepitheliomatous hyperplasia may explain some cases of squamous nests in vulvar lichen sclerosus with lichen simplex chronicus, potentially as a reaction to tissue damage rather than squamous cell carcinoma.

This study observed that melanocytes in the outer root sheath of fetal scalp hair follicles may act as stem cells, showing rapid proliferation but immature function and morphology in culture.

This study examined 16 sporadic trichoblastic tumors and found that although one showed malignant transformation, clinical follow-up revealed no residual or metastatic disease. RNA sequencing indicated a high tumor mutational burden and absence of a UV-related signature, helping to distinguish these tumors from similar growths.

Polarizing light microscopy can easily and reliably diagnose congenital keratinizing disorders like Netherton syndrome.

This case report highlights the diagnostic challenge of inverted follicular keratosis, emphasizing the importance of histopathology for accurate differentiation from malignancies.

This study found that sphynx cats exhibit hair follicle dysplasia with abnormal hair shaft production, but without a reduction in the number of follicles, similar to murine KRT 71 mutants.

This article discusses eruptive vellus hair cysts, describing their clinical characteristics, and reports no new research findings.

In this case study, two middle-aged patients with pruritic scalp erosions were diagnosed with localized pemphigus vulgaris, which resolved without relapse after treatment with low-dose oral prednisone and intralesional triamcinolone acetonide.

This study reported a previously undescribed form of hereditary hypotrichosis in a family, characterized by childhood-onset hair loss, morphea, and probable autosomal dominant inheritance.

This educational activity reports no new research findings; it aims to help physicians assess and improve their clinical skills through self-evaluation and continued medical education.

In this case report, a rare instance of pilomatrixoma was identified in the left hand of a 40-year-old patient, with successful surgical treatment and no recurrence observed after four years of follow-up.

This study observed that nevus melanocytes do not exhibit signs of senescence, suggesting that their growth arrest is due to cell interactions and not directly caused by BRAF activation.

This case report describes a 29-year-old Japanese man with follicular mucinosis, suggesting nestin-positive, multipotent hair follicle stem cells may be involved in reticular epithelial degeneration of the outer root sheath.

This study found that eccrine duct dilation is significantly more frequent in cicatricial alopecias compared to noncicatricial alopecias, possibly due to the scarring process.

This study indicates that the OVOL1-OVOL2 axis may play a significant role in hair follicle differentiation and growth, potentially serving as therapeutic targets for hair disorders like alopecia and in the tumorigenesis of pilomatricoma.

A man's scalp hair loss was due to a combined melanocytic nevus and alopecia areata, suggesting a possible link between the two conditions.

In this study, a 14-year-old boy with nevus sebaceous on his scalp underwent a three-stage serial excision, resulting in complete lesion removal with minimal scarring and no recurrence after six months.

This case report documents a rare presentation of congenital milia en plaque on the scalp of a five-year-old boy, with blaschkoid extension to the nuchal area, highlighting its uncommon location and onset.

This study found that scalp basal cell carcinomas do not appear to behave more aggressively than other types, despite suggestions in the literature.

This case report documents a 63-year-old with Birt-Hogg-Dubé Syndrome who developed choroidal melanoma alongside multiple lid folliculomas, marking the first known association of these conditions.

Syringomas likely start in the upper dermis and form distinct luminal structures.

In this study, a rare case of a trichilemmal cyst in a 6-year-old's upper eyelid was observed; it was identified through histopathological examination after excision, highlighting the importance of considering trichilemmal cysts in atypical pediatric eyelid swellings.

This study reported that both primary and secondary cutaneous follicle center lymphomas can present with atypical scalp or forehead lesions, leading to potential misdiagnosis as other skin conditions.

This study found evidence that polythelia pilosa, previously excluded from classification, should be reintroduced as it marks true aberrant mammary structures in men and hirsute women.