Beyond the Matrix: A Rare Case of Pilomatrix Carcinoma with Histologic Insights
January 2026
in “
Annals of Pathology and Laboratory Medicine
”
Studysummary In this case report, a 27-year-old woman with a swelling on her neck was initially misdiagnosed with squamous cell carcinoma, but was later identified as having pilomatrix carcinoma with lymph node metastasis, highlighting the importance of accurate diagnosis for effective treatment and prognosis improvement. Our plain-language summary of this paper — not a Tressless recommendation.
This case report discusses a rare instance of pilomatrix carcinoma, a type of skin adnexal tumor originating from matrical cells of hair follicles, in a 27-year-old female. Initially misdiagnosed as squamous cell carcinoma, the tumor recurred and was correctly identified as pilomatrix carcinoma with regional lymph node metastasis upon re-excision. The patient is currently receiving radiotherapy due to the metastasis. The report emphasizes the importance of accurate diagnosis in improving treatment protocols and patient prognosis, given the rarity of this carcinoma.
