Aggressive extraocular sebaceous carcinoma recurring after mohs micrographic surgery

Area of Science:

• Dermatology
• Oncology
• Pathology

Background:

• Sebaceous carcinomas (SC) are uncommon adnexal tumors typically affecting older adults in the head and neck region.
• Traditional treatment involves surgical excision with wide margins; Mohs micrographic surgery (MMS) is an alternative.
• SC can present with aggressive behavior and a risk of metastasis.

Purpose of the Study:

• To present a case of a rapidly progressing sebaceous carcinoma in an immunocompromised patient.
• To emphasize the aggressive potential of sebaceous carcinoma and review diagnostic histological features.
• To discuss treatment outcomes and challenges in diagnosing poorly differentiated neoplasms.

Main Methods:

• Case presentation of a Caucasian female renal transplant recipient.
• Surgical excision using Mohs micrographic surgery (MMS) with initially negative margins.
• Histopathological review to address diagnostic discrepancies.

Main Results:

• The sebaceous carcinoma recurred rapidly despite MMS.
• The tumor metastasized, ultimately leading to patient mortality.
• Initial biopsy diagnosis of poorly differentiated carcinoma caused some pathologist disagreement.

Conclusions:

• Sebaceous carcinoma can exhibit rapid progression and metastasis, even with appropriate surgical management.
• Immunocompromised status may influence tumor behavior.
• Accurate histological diagnosis is crucial for managing potentially aggressive sebaceous carcinomas.