Table 1.
Plasmacytoid malignant melanoma cases described in literature from both cytology and biopsy specimens.
| Primary or metastatic site | Cases in literature |
|---|---|
| Cytology | |
| Liver metastases4 | 16* |
| Breast metastases5 | 14 |
| Chest wall, amelanotic2 | 1 |
| Lymph node metastasis,3 amelanotic | 1 |
| Biopsy | |
| Oral7,8 | 14 |
| Skin,1,6 1 case amelanotic | 2 |
| Intra-nasal1 | 1 |
| Bladder metastasis9 (from esophageal primary) | 1 |
| Metastases1 | NA° |
*Parwani (2004) explains that 16 cases of metastatic melanoma to the liver were examined but does not list how many of the 16 cases had plasmacytoid morphology. The plasmacytoid morphology was listed as an abundant cytomorphologic feature in these cases and not present in cases of hepatocellular carcinoma.
°Banerjee (2000) explains that a few cases of metastatic melanoma had the plasmacytoid morphology. NA, not available.