10 citations
,
January 2011 in “Annals of Dermatology” A rare scalp tumor involving two hair follicles was successfully removed with surgery, with no recurrence after 7 months.
39 citations
,
February 2011 in “American Journal of Dermatopathology” Onychomatricoma is a unique nail tumor that mimics the entire nail unit and is not related to other hair-related tumors.
44 citations
,
January 1999 in “Dermatology” Nevus comedonicus is a rare skin condition with grouped open pores, sometimes linked to other body issues.
3 citations
,
January 1989 in “The Nishinihon Journal of Dermatology” A hair cyst can become cancerous, showing specific keratins from the hair sheath.
January 2025 in “Dermatology Review” Giant keratoacanthoma can look like squamous cell carcinoma, requiring careful diagnosis and surgical removal.
July 2019 in “Cancer Research” Bone marrow and hair follicle cells help form skin tumors, suggesting new treatment targets.
44 citations
,
March 2012 in “Molecular Carcinogenesis” Keratin 15 cells from hair follicles help develop and maintain skin tumors in mice.
January 2026 in “Annals of Pathology and Laboratory Medicine” Accurate diagnosis of rare pilomatrix carcinoma is crucial for effective treatment.
January 2024 in “ACTA SCIENTIAE VETERINARIAE” An epidermoid cyst in a dog's mammary gland is rare and benign.
178 citations
,
April 2011 in “Journal of Clinical Investigation” Basal cell carcinomas in mice can start from hair follicle stem cells and other skin cell types, depending on signaling levels.
19 citations
,
January 2014 in “International Journal of Medical Sciences” Abnormal activation of hair follicle stem cells and Wnt/β-catenin signaling contributes to sebaceous neoplasms.
2 citations
,
May 1991 in “PubMed” Nevus comedonicus is a rare skin condition causing dark bumps, treatable with retinoic acid or surgery.
2 citations
,
August 2025 in “Reports — Medical Cases Images and Videos” A rare pigmented skin tumor called melanotrichoblastoma was diagnosed in a 51-year-old woman.
8 citations
,
July 2014 in “American Journal of Dermatopathology” Cutaneous keratocyst and steatocystoma should be called "sebaceous duct cyst" due to their similarities.
2 citations
,
March 1994 in “Oncology Reports” Keratoacanthomas and squamous cell carcinomas have similar keratin patterns, making them hard to tell apart.
76 citations
,
October 2000 in “Journal of the American Academy of Dermatology” Follicular mucinosis can be an early sign of aggressive mycosis fungoides.
July 2025 in “Clinical Dermatology Review” A rare family case of multiple benign hair follicle tumors was identified, highlighting the need to distinguish them from similar conditions.
January 2015 in “Pathology” A 64-year-old man had a rare skin cancer near his ear, unresponsive to antibiotics, with specific skin and hair follicle changes.
6 citations
,
February 2010 in “Journal of The American Academy of Dermatology” A woman had a rare skin condition with recurring painful nodules that heal in 6 weeks, often without needing treatment.
24 citations
,
November 2003 in “Australasian Journal of Dermatology” A rare skin cancer caused hair loss and spread, needing multiple treatments.
September 2022 in “TURKDERM” A rare benign skin nodule was found on the buttock, a unique location for this condition.
January 2025 in “Dermatology Review” Trichilemmal carcinoma is rare, usually benign after removal, but needs close follow-up due to recurrence risks.
24 citations
,
September 1985 in “Journal of The American Academy of Dermatology” The report suggests a possible link between hair loss and hidden scalp tumors but states more evidence is needed to confirm this.
15 citations
,
January 2014 in “Dermatology” Some patients with a type of skin lymphoma can experience a rare, non-scarring hair loss that looks like another hair loss condition but has distinct features.
11 citations
,
November 2021 in “JDDG Journal der Deutschen Dermatologischen Gesellschaft” Cutaneous angiosarcomas require a combined treatment approach, but prognosis is generally poor.
November 2013 in “John Wiley & Sons, Ltd eBooks” Skin symptoms can indicate endocrine disorders and have various treatments.
61 citations
,
March 1966 in “Archives of Dermatology” Nevoid basal cell carcinomas start in the skin and hair follicles.
March 2022 in “Veterinary dermatology” A one-year-old cat had multiple benign skin tumors similar to those known in humans.
1 citations
,
March 2010 in “Internal medicine journal” A 72-year-old man with sudden taste issues and hair growth was diagnosed with a severe stomach cancer and died within 5 months.
September 2020 in “Oral surgery, oral medicine, oral pathology and oral radiology” The report shows that a rare benign tumor was successfully removed from inside the mouth to avoid scarring on the face.