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This study found that different types of seborrheic keratosis demonstrate diverse differentiation patterns, highlighting its undifferentiated and hyperproliferative state with varying keratinization directions.

This study found that GLI1 RNA CISH was highly sensitive and specific for distinguishing basal cell carcinoma from nonfollicular epithelial neoplasms but not from most benign follicular tumors.

This study found that Hedgehog-driven skin tumorigenesis is dependent on the Wnt/beta-catenin signaling pathway and suggests that targeting Wnt ligands could be a potential therapeutic strategy.

This case report describes a hybrid cyst in a Sprague-Dawley rat, showing both infundibular and matrical differentiation similar to different parts of normal hair follicles.

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.

This case report describes a pilomatricoma in a 21-year-old woman, highlighting the diagnostic process and illustrating the potential for intraoral surgical access to minimize scarring.

In this histopathology study of nevus sebaceus, researchers observed distinct epidermal, sebaceous, follicular, and apocrine changes, including sebaceous hyperplasia and basaloid adnexal proliferation, which help differentiate it from similar conditions like basal cell carcinoma and trichoblastoma.

This case report documents only the second known instance of congenital lymphadenoma, expanding the diagnostic possibilities for cutaneous lymphoepithelial tumors in children.

This case report describes a trichoblastoma in a 58-year-old man's leg, which was successfully excised without recurrence observed after 9 months.

This article reviews the distinctive features of cutaneous lymphadenoma, a variant of trichoblastoma, and its differential diagnosis, but it presents no new empirical results.

This case report provides the first evidence of clinical and histopathological findings of cutaneous diffuse basaloid follicular hamartomas in a young domestic short hair cat.

This article reports a case of late onset linear and unilateral basaloid follicular hamartoma in an elderly male, highlighting the clinical presentation, histopathological findings, and planned treatment approach.

This study found that serine 44 in the N-terminal head domain of keratin 17 is phosphorylated in response to various stimuli affecting skin keratinocyte growth, linking K17 up-regulation with growth and stress responses in skin epithelium.

This case report describes a 22-year-old woman with a nevoid plaque termed localized follicular hamartoma, characterized by skin-colored papules and specific cellular and structural features.

In this case report, a rare melanotrichoblastoma tumor was identified in a 51-year-old female following the histological and immunohistochemical analysis of a lesion on the pubo-inguinal area, presenting with strong epithelial marker positivity and a low proliferative index.

This study suggests that NBCCS and BFHS may be the same genetic condition, which could help improve identification and management of misdiagnosed cases with specific surveillance strategies.

This study documented distinct expression patterns of stem cell markers LGR5 and LGR6 in various human skin tumors, highlighting differences in their potential roles and contributions to tumor development.

This study found that 11% of cutaneous focal mucinosis lesions demonstrated follicular induction, which can mimic basal cell carcinoma histologically and complicate diagnosis.

This study found that the phenotype of Hedgehog/Gli-driven skin tumors in mice depends on the cell of origin, tissue context, and level of oncogenic signaling.

This study observed that benign skin tumors were more common than malignant ones, with squamous cell carcinoma being the most frequent type among malignant tumors.

This study found that in superficial angiomyxomas, S100A4-positive mesenchymal niches may induce non-neoplastic adnexal epithelial growth, and highlighted evidence of mesenchymal-to-epithelial transition in eccrine duct branching, especially in Carney's complex cases.

In this case study, a 51-year-old Japanese man was diagnosed with desmoplastic trichoepithelioma after histological examination of surgically excised facial plaques.

This research retrospectively evaluated 92 skin specimens to propose histopathological criteria for diagnosing alopecia areata incognito, distinguishing it from telogen effluvium and androgenetic alopecia.

This study found that Sox9 was variably expressed in most canine skin neoplasms, particularly in those originating from the hair follicle's bulge region, suggesting its potential as a stem cell marker.

This review discusses the role of Hedgehog signaling in basal cell carcinoma development and highlights genetic mouse models and potential targeted therapies, but reports no new clinical results.

This article presents a clinicopathologic challenge involving early leonine facies with alopecia in a young man and reports no new clinical results.

This article reviews the role of keratins in epithelial function and structure, discussing their involvement in growth control, organelle functions, and pathomechanisms of disorders, but reports no new clinical results.

Cylindromas likely originate from hair follicle stem cells, not sweat glands.

This study introduces the term "hair matrix cyst" for a cyst with both pilomatricoma and epidermal cyst characteristics, highlighting its potential for misdiagnosis among similar skin conditions.

This case report describes a rare instance of trichogerminoma with unusually numerous mitotic figures and a higher Ki67 proliferative rate, distinguishing it from previously documented cases.