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This case study reports a teenage boy with juvenile polyposis syndrome, presenting with microcytic anemia, growth failure, and rectal bleeding, leading to the diagnosis following colonoscopy and histologic examination of colonic polyps.

This case report describes a patient with myasthenia gravis, alopecia, and hair follicle hamartoma, showing notable similarities to a previously reported case.

This study highlights a rare case of ovarian hyperthecosis in a 58-year-old postmenopausal woman, presenting with polycythemia and severe hyperandrogenism symptoms, with resolution of symptoms following laparoscopic bilateral oophorectomy.

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 case report describes a 73-year-old male with numerous colon polyps whose long-term use of Cape Aloe likely caused melanosis coli, which helped highlight the polyps' locations.

In this report, two cases of melanocytic matricoma, a rare benign hair follicle lesion that mimics melanoma and basal cell carcinoma, were described and successfully treated with complete surgical excision. Histological analysis was crucial for differentiation from similar malignant lesions.

In this case study, concurrent prostatic adenocarcinoma and a rare solitary fibrous tumor were identified on a transurethral resection of the prostate specimen.

In this case study, a 12-year-old girl with an imperforate hymen experienced significant complications, including hematometrocolpos and a large abdominal mass, highlighting the necessity of early gynecologic care and education about female anatomy to improve outcomes.

In this study, researchers found that the ability of hamster polyomavirus to cause lymphoid tumors in Syrian hamsters may be linked to its association with the tyrosine kinase p59fyn.

This study focused on equine sarcoid, the most common tumor in horses, and described its types, clinical signs, and histopathological characteristics such as hyperkeratosis and changes in the hair follicle and dermis.

This case report describes a rare instance of pilomatricoma, a benign tumor of the hair follicle, accompanied by striae distensae on a young man's flank, emphasizing the uniqueness of this presentation for timely diagnosis and care due to its potential for malignant transformation.

This case report describes a 41-year-old woman with lower abdominal pain who was found to have an ovarian cavernous hemangioma, highlighting the importance of correct diagnosis to prevent unnecessary radical surgery.

A man had a non-cancerous, fast-growing skin lump on his arm that was removed with surgery.

In this case study, researchers describe a rare instance of pilomatricoma with ossification in a 32-year-old woman, highlighting specific histopathological features and the role of bone morphogenic proteins and macrophages in its development.

A case study reported a 15-year-old boy with a diagnosis of giant folliculosebaceous cystic hamartoma on his right buttock, characterized by malformed hair follicles and sclerotized collagen.

This study found that ultrasonography improved preoperative diagnosis rates of pilomatricoma to 76% by identifying specific features such as inner echogenic foci and a peripheral hypoechoic rim.

This case study reported a 15-year-old girl with a nevus sebaceus of Jadassohn, where a secondary neoplasm potentially developed into either pigmented trichoblastoma or pigmented basal cell carcinoma, highlighting the importance of early recognition and evaluation of such lesions for effective management.

This study presented an elderly male with a nodular lesion diagnosed as pilomatricoma and discussed the value of diagnostic tools like dermoscopy and high-frequency ultrasonography, encouraging clinicians to consider pilomatricoma in differential diagnoses of nodular lesions across all ages.

This study found that epithelial keratin K 6 is associated with hyperkeratotic and ulcerated changes in the gastric pars oesophagea of pigs, suggesting epithelial proliferation plays a role in ulcer development.

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 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.

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

This study found that onychomatricoma can fully mimic the nail unit and differentiate toward the nail bed and isthmus, distinguishing it from other pilar tumors.

This case report describes a rare instance of melanocytic matricoma, a benign pigmented papule found in sun-damaged skin of an elderly individual, highlighting its distinct clinical and pathological features.

This study found that while malignant pilomatricomas maintain some keratin expression patterns seen in benign counterparts, they notably express additional epithelial keratins, potentially influencing tumor calcification.

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.

This study identified 96 cases of pilomatricomas linked to genetic syndromes, including a novel association with Apert syndrome, highlighting that these tumors often manifest as the first indication of underlying conditions in pediatric patients.

This study reported the case of a 30-year-old man with a bluish-grey scalp nodule that developed over a previously stable hairless plaque, revealing histopathological features consistent with epithelioid cell nests and spindle-shaped dermal melanocytes embedded in collagen.

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 study describes a 21-year-old male diagnosed with Becker's nevus, characterized by hyperpigmented and hypertrichotic lesions that developed over several years.