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This review discusses the cell biological characteristics of the outer root sheath of normal human hair follicles and highlights some similarities and differences with trichilemmal tumors, but reports no new results.

This study suggests that keratoacanthomas may be distinguished from squamous cell carcinoma by identifying hair follicle structures, based on keratin expression and histological features observed in tumor samples.

This study found that calretinin immunoreactivity may help identify the innermost cell layer of the outer root sheath in anagen hair follicles and certain cutaneous adnexal proliferations with follicular, sebaceous, and eccrine differentiation.

This article discusses the classification and characteristics of infundibular squamous cell carcinoma and highlights the ongoing debate about its differentiation from other carcinoma types, reporting no new clinical results.

This study found that phospho-S6 is strongly expressed in malignant hair follicle tumors but only patchily in a minority of benign tumors, indicating a potential marker for distinguishing between the two.

The document outlines criteria to identify and differentiate neoplasms based on follicular characteristics.

This article proposes a new classification system for cutaneous adnexal cysts based on their origin in the folliculo-sebaceous unit and sweat glands, aiming to clarify their categorization and origins.

This article reviews confocal microscopy findings in trichoepithelioma and desmoplastic trichoepithelioma, noting similarities with histological features, but it provides no new clinical results.

This study found that keratin 15 expression in trichoepitheliomas and some basal cell carcinomas suggests a link to hair follicle stem cells in the bulge.

This study found that cutaneous cysts most frequently appeared as epidermal cysts, with unusual locations posing diagnostic challenges that required histopathological analysis for definitive diagnosis.

This retrospective study at a tertiary care hospital observed that follicular tumors were the most common type of skin adnexal tumors (42.9%) among 42 analyzed cases, with malignancies making up 7.1% of the cases.

This case study describes a middle-aged woman diagnosed with a proliferating trichilemmal tumor on her scalp, emphasizing the importance of comprehensive diagnostic approaches and highlighting surgical excision as the primary treatment.

This source describes the development, structure, and types of skin appendage tumors, noting both benign and malignant forms, potential associations with syndromes, and categories based on follicular differentiation.

This case report introduces 'onycholemmal carcinoma' as a designation for a slowly growing malignant tumor of the nail bed epithelium in a 69-year-old male, with no recurrence or metastasis observed over four years after treatment.

This report describes a rare case of multiple trichofolliculomas on the face, which clinically resembled multiple trichoepitheliomas.

This case report identifies a new type of hair matrix tumor called "rippled pattern trichomatricoma," distinguished by its unique cell arrangement and differentiation features.

This case report details a rare large epidermal cyst over the sacrumcoccygeal region in an elderly patient, which was successfully removed surgically.

This report diagnosed a mass below a dog's eye as desmoplastic tricholemmoma based on histopathological and immunohistochemical findings.

This article reports an unprecedented case of trichofolliculoma in the gluteal area, previously unreported in English literature.

This report describes four trichoblastoma cases rich in Merkel cells, suggesting these tumors may mimic fetal skin development where Merkel cells are numerous.

A rare benign skin tumor showed unusual features of sebaceous and sweat glands, important for correct diagnosis.

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

This study described two cases of trichoblastomas in the tactile hair skin of aged house musk shrews, highlighting that their histological structure differs from that in humans and other animals.

This report describes a case study of a 23-year-old female exhibiting multiple trichodiscomas, a type of benign tumor of the hair follicular discs common in familial cases and potentially linked to Birt-Hogg-Dube syndrome, though genetic testing was not performed due to financial constraints.

Capitate trichomes have more endoplasmic reticulum and vacuoles, while peltate trichomes have more plastids and larger subcuticular spaces.

In this case report, researchers observed multiple trichofolliculomas in family members, noting this as a rare manifestation of typically singular hair follicle hamartomas.

This report presents a case of a superficial angiomyxoma with a trichofolliculoma in a 51-year-old man, characterized by myxomatous nodules and specific immunohistological markers.

This case report describes a 26-year-old male patient with trichofolliculoma, highlighting dermoscopic features that aid its diagnosis and distinct characteristics from other similar lesions.

This study found that trichostasis spinulosa was present in some seborrheic keratoses, indicating they may partly originate from hair follicle cells.