| The main problem in the recognition of these lesions lies in differentiating them from primary breast carcinomas. |
| These deletions are also found in bronchogenic carcinomas, thus karyotyping does not differentiate mesothelioma from adenocarcinoma of the lung. |
| Furthermore, they suggested that such neuroendocrine carcinomas might be of endodermal rather than neuroectodermal derivation. |
| Unlike basal cell carcinomas, the heaped-up edges of the lesions are fleshy rather than clear in appearance. |
| It is currently believed that most colorectal carcinomas start as benign adenomas that undergo malignant transformation into adenocarcinoma. |
| The rarer types of bladder cancer include squamous cell carcinomas and adenocarcinomas, which have a different cell structure. |
