Concurrent Pilomatrix Carcinoma and Diffuse Large B-Cell Lymphoma

Area of Science:

• Dermatology
• Oncology
• Pathology

Background:

• Pilomatrix carcinoma is a rare skin tumor originating from follicular matrix cells.
• It can develop independently or transform from a benign pilomatrixoma.
• Impaired immune surveillance, due to UV radiation or other cancers, may contribute to malignant transformation.

Purpose of the Study:

• To report a rare case of pilomatrix carcinoma.
• To highlight a concurrent diagnosis of high-grade B-cell lymphoma.
• To emphasize the need for vigilant follow-up in patients with chronic malignant skin tumors.

Main Methods:

• Case report of a 58-year-old male patient.
• Documentation of a long-standing pilomatrix carcinoma on the right leg.
• Identification of concurrent high-grade B-cell lymphoma in the same extremity.

Main Results:

• A 58-year-old man presented with a decade-long history of pilomatrix carcinoma.
• The patient had undergone repeated curettage for the lesion.
• A high-grade B-cell lymphoma was diagnosed concurrently on the same leg.

Conclusions:

• This case illustrates a rare association between pilomatrix carcinoma and B-cell lymphoma.
• Close monitoring of patients with long-standing malignant skin tumors is crucial.
• Understanding potential links between skin tumors and systemic conditions is vital for patient care.