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Sebaceous carcinoma with apocrine differentiation: a rare entity with aggressive behavior
Nishat Afroz1, Noorin Zaidi, Syed Ali Raza Rizvi
1Department of Pathology, J N Medical College, Aligarh, Uttar Pradesh, India.
This study reports an extremely rare case of sebaceous carcinoma with apocrine differentiation in the ocular region. Early diagnosis and aggressive management are crucial due to its potential to mimic benign lesions.
Area of Science:
- Oncology
- Dermatopathology
- Ophthalmology
Background:
- Sebaceous carcinomas are rare, aggressive neoplasms, with 75% occurring in the ocular region.
- Diagnosis is often delayed due to rarity, varied histology, and diverse clinical presentation.
- Sebaceous carcinomas are histologically classified into well and poorly differentiated types.
Observation:
- A 60-year-old male presented with a painless, progressive right upper eyelid swelling.
- Initial computed tomography (CT) scan suggested a hemangioma.
- Histopathological examination confirmed sebaceous carcinoma with areas of apocrine differentiation.
Findings:
- Immunohistochemistry revealed positivity for cytokeratin (CK) 7 and CK 19, confirming apocrine differentiation.
- This represents one of the few reported cases of sebaceous carcinoma with apocrine differentiation.
- The tumor exhibited features of both sebaceous and apocrine differentiation.
Implications:
- Ocular sebaceous carcinomas with apocrine differentiation are exceptionally rare and clinically significant.
- These tumors can mimic benign lesions, leading to diagnostic delays.
- Aggressive surgical intervention and follow-up are necessary, differing from standard sebaceous carcinoma management.
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