Imaging Sonographic Findings in a Case of Proliferating Trichilemmal Tumor of a Finger: A Case Report

May 2017 in “ Journal of Clinical Ultrasound ”

Ki Eon Kwon, Seon‐Jeong Kim, Joo Hak Kim, Yoon Yang Jung, Noh Hyuck Park, Ji Yeon Park, Kyung A Kang, Soo Heui Baek

proliferating trichilemmal tumor PTT keratin cholesterol sonographic imaging

TLDR A rare finger tumor was imaged, showing a unique pattern not seen before.

This case report described a rare proliferating trichilemmal tumor (PTT) originating from the outer root sheath of a hair follicle, typically found on the scalp, but in this instance, located in the subungual region of a finger. The sonographic examination revealed a heterogeneous mass with echogenic foci, likely representing keratin and cholesterol, and no detectable intratumoral vascularity. This was notable as sonographic findings of PTT in the subungual region had not been previously documented.

View this study on onlinelibrary.wiley.com →

Discuss this study in the Community →

Related Community Posts Join

6 / 85 results

community Hair Struggles: Recovery and Questions ; Greedy Doctors in Pakistan

in Finasteride/Dutasteride 2 years ago

The user experienced hair thinning after switching from minoxidil to finasteride, capixyl serum, and PRP treatment. They returned to minoxidil and took vitamin B12 and D3 supplements, but their hair remains thinner, and they are unsure about continuing finasteride.

community Prolactin’s role in antitumor activity of the immune system – a safety concern for HMI-115?

in Research/Science 3 upvotes 2 years ago

Hair loss discussion includes treatments Minoxidil, Finasteride, and RU58841. Prolactin's role in immune system's antitumor activity raises safety concerns for HMI-115.

community 1.5 years on fin/min progress pics, thoughts would be great!

in Progress Pictures 69 upvotes 4 years ago

A 42-year-old male shared his 1.5-year hair regrowth progress using 1.25mg finasteride daily and regular doses of minoxidil twice a day, and recently started using the Derminator 2. He also mentioned his battle with cancer and Cushing's syndrome, which affected his weight and hair.

community Anti-oxidants that reverse hairloss?

in Research/Science 89 upvotes 5 years ago

Resveratrol and fisetin, found in red wine and strawberries, may promote hair growth by affecting hair follicle cells. Users discuss various treatments, including natural remedies like saw palmetto and topical applications, with mixed opinions on their effectiveness compared to pharmaceuticals like finasteride.

community Sugars ARE important for hair growth | Glycosaminoglycans as Hair Growth Stimulant

in Research/Science 75 upvotes 1 year ago

Glycosaminoglycans are important for hair growth, and combining minoxidil with tretinoin and Biopeptide-CL may enhance hair growth by boosting glycosaminoglycan levels and improving the hair follicle environment. Users discussed the potential effectiveness and future of these treatments.

community Copper Literally Saved My Life (and My Baldness)

in Treatment 31 upvotes 9 months ago

Oral copper supplementation significantly improved hair regrowth for someone who experienced severe hair loss after stopping minoxidil, suggesting copper deficiency might hinder minoxidil's effectiveness. The user now only takes copper and occasionally uses microneedling, recommending others to try copper if minoxidil alone isn't effective.

Related Research

5 / 5 results

research Keratins of the Human Hair Follicle

276 citations , January 2005 in “International review of cytology”

More research is needed to understand how hair keratins work and their role in hair disorders.

research Hair Follicle Differentiation And Regulation

199 citations , January 2004 in “The International Journal of Developmental Biology”

Hair follicle growth and development are controlled by specific genes and molecular signals.

research Expression of E6 and E7 Papillomavirus Oncogenes in the Outer Root Sheath of Hair Follicles Extends the Growth Phase and Bypasses Resting at Telogen

10 citations , October 2000 in “PubMed”

E6/E7 oncogenes in hair follicles cause continuous hair growth by skipping the resting phase.

research Effects of Epidermal Growth Factor on the Morphology and Patterns of DNA Synthesis in Isolated Human Hair Follicles

94 citations , February 1994 in “The journal of investigative dermatology/Journal of investigative dermatology”

EGF makes hair follicles grow longer but stops hair production.

research Keratins of the Human Hair Follicle: Hyperproliferative Keratins Consistently Expressed in Outer Root Sheath Cells In Vivo and In Vitro

135 citations , November 1987 in “Differentiation”

Outer root sheath cells consistently express certain keratins influenced by their environment.