Mucoepidermoid Carcinoma Key Points Mucoepidermoid carcinoma (MEC) is a highly malignant epithelial neoplasm comprising mucus-secreting, proliferating squamous, and nondescript intermediate epidermoid cells Although the pathophysiology is unclear, a novel translocation…
Microcystic Adnexal Carcinoma Key Points Microcystic adnexal carcinoma (MAC) is a slow-growing, locally aggressive cutaneous adnexal malignancy derived from eccrine sweat glands It occurs predominantly on the head and neck…
Metastatic Tumors to the Eyelids Key Points Eyelid metastasis is very rare accounting for less than 1% of malignant eyelid lesions Breast carcinoma is most frequent, followed by skin melanoma,…
Merkel Cell Carcinoma Key Points Merkel cell carcinoma (MCC) is a rare, aggressive, cutaneous neuroendocrine malignancy The majority of MCC tumors occur on the face and head, but only 5%…
Malignant Melanoma Key Points Cutaneous malignant melanoma is an invasive tumor of malignant melanocytes On the eyelid, malignant melanoma accounts for about 1% of all eyelid malignancies On the eyelids,…
Liposarcoma Key Points Liposarcoma (LPS) is the most common soft tissue sarcoma in adults In the periorbital region, liposarcomas may present in the orbit or on the eyelid They originate…
Leukemia Cutis Key Points Leukemia is a cancer of myelogenous and lymphatic precursor blood-forming cells, and with infiltration of the epidermis, dermis, and subcutis it results in extramedullary lesions such…
Kaposi Sarcoma Key Points Kaposi sarcoma (KS) is a low-grade, multicentric, vascular neoplasm Classic KS occurs in elderly men of southern European ancestry, typically on the lower extremities Endemic KS…
Fibrosarcoma Key Points Fibrosarcoma (FS) is a highly malignant tumor of fibrous tissue These tumors predominantly arise from tendons and fascia of deep soft tissues, most often in the extremities,…
