Related Experiment Video
Updated: Jul 19, 2026

A 3D Organotypic Melanoma Spheroid Skin Model
Published on: May 18, 2018
Bilateral diffuse melanocytic proliferation associated with ovarian carcinoma and metastatic malignant amelanotic
Hon-Vu Q Duong1, Ian W McLean, Donald E Beahm
1Department of Ophthalmic Pathology, Armed Forces Institute of Pathology, Washington, DC, USA. Tenthsfg@msn.com
Purpose:
To report a case of metastatic malignant amelanotic melanoma to the skin from a patient diagnosed with bilateral diffuse uveal melanocytic proliferation (BDUMP). This dermatological finding is a unique phenomenon associated with BDUMP.
Design:
Retrospective case report.
Methods:
We studied the case of a 66-year-old Caucasian woman with gradual onset of blurred vision in her right eye followed by her left eye. She had previously been diagnosed with ovarian carcinoma, and findings of funduscopic examinations were consistent with BDUMP. Metastatic examination revealed no evidence of liver involvement. Clinical and histopathological examinations of both enucleated eyes were consistent with BDUMP.
Results:
The hematoxylin and eosin, S-100, and HMB-45 stains were consistent with metastatic malignant amelanotic melanoma to the skin.
Conclusions:
Although believed to have a low potential for metastasis, patients should be monitored and evaluated regularly to detect any new lesions not associated with their primary inciting carcinoma.
Related Concept Videos
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Abnormal Proliferation
Abnormal Proliferation
Tumor Progression
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Metastasis
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...

