the atypical carcinoids ( well or moderately differentiated neuroendocrine carcinomas ) share the neuroendocrine differentiation of the carcinoids and many of their histologic features , but are distinguished by the presence of tumor necrosis , more anaplastic large cell nuclei with numerous mitotic figures , and a distinctly worse prognosis .
C1709218
neuroendocrine
C0007095
carcinoids