Workup
Diagnostic Procedures
- Obtain a biopsy specimen of the lesion to establish the diagnosis.
- Numerous sebaceous elements with mitotic figures are observed; the cells may stain positively for fat with oil red O stain.
- The tumor can be multicentric, and it may grow into nests with central necrosis mimicking comedocarcinoma of the breast.
- Individual tumor cells may be present in the epithelium in a pattern of intraepithelial spread reminiscent of Paget disease. Therefore, it is recommended to perform multiple conjunctival map biopsies at the time of the initial lesion biopsy to stage the local disease.
- It is good clinical practice to obtain a biopsy specimen of any recurrent chalazion or unilateral blepharitis that is resistant to usual treatment. It is also advisable to alert the pathologist to the possible diagnosis and ask for the preferred method of tissue handling. Formalin fixation is fine if the laboratory staff know to avoid alcohol and xylene histoprocessing methods.
- Evaluate lymph nodes to rule out distant spread.
Histologic Findings
The histopathology of sebaceous gland cell carcinoma is dominated by large anaplastic cells with open vesicular nuclei and prominent nuclei set in foamy or frothy cytoplasm. The appearance of the cytoplasm is a result of the presence of lipid vacuoles. A useful histopathologic feature is large nuclear forms, including multinucleated tumor cells and bizarre monstrous cell forms. The spread of the tumor in the form of infiltrating lobules, nests, and cords, as well as superficially within the epithelium, is highly characteristic.
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References
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Lai TF, Huilgol SC, Selva D, et al. Eyelid sebaceous carcinoma masquerading as in situ squamous cell carcinoma. Dermatol Surg. Feb 2004;30(2 Pt 1):222-5. [Medline].
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Nijhawan N, Ross MI, Diba R, et al. Experience with sentinel lymph node biopsy for eyelid and conjunctival malignancies at a cancer center. Ophthal Plast Reconstr Surg. Jul 2004;20(4):291-5. [Medline].
Shields JA, Shields CL. Sebaceous carcinoma of the glands of Zeis. Ophthal Plast Reconstr Surg. 1988;4(1):11-4. [Medline].
von Below H, Rose GE, McCartney AC, et al. Multicentric sebaceous gland carcinoma of the lid?. Br J Ophthalmol. Dec 1993;77(12):819-20. [Medline].
Wagoner MD, Beyer CK, Gonder JR, et al. Common presentations of sebaceous gland carcinoma of the eyelid. Ann Ophthalmol. Feb 1982;14(2):159-63. [Medline].
Yeatts RP, Waller RR. Sebaceous carcinoma of the eyelid: pitfalls in diagnosis. Ophthal Plast Reconstr Surg. 1985;1(1):35-42. [Medline].
Zurcher M, Hintschich CR, Garner A, et al. Sebaceous carcinoma of the eyelid: a clinicopathological study. Br J Ophthalmol. Sep 1998;82(9):1049-55. [Medline].
Further Reading
Keywords
sebaceous gland carcinoma, meibomian gland carcinoma, sebaceous carcinoma, sebaceous cell carcinoma, carcinoma of meibomian and Zeis glands, sebaceous hyperplasia, sebaceous gland adenomas, eyelid malignancy
Workup: Sebaceous Gland Carcinoma