Table 1 T classification for melanoma of the upper aerodigestive tract
From: Primary malignant melanoma of the esophagus: a rare and aggressive disease
T3 | Epithelium (mucosal disease) |
|---|---|
T4a | Deep soft tissue, cartilage, bone or overlying skin |
T4b | Brain, dura, skull base, lower cranial nerves, masticator space, carotid artery, prevertebral space, mediastinal structures, cartilage, skeletal muscle or bone. |