When neuroendocrine cell hyperplasia and tumorlets are extensive, they represent the rare preinvasive lesion for carcinoids known as " diffuse idiopathic pulmonary neuroendocrine cell hyperplasia ".
2.
Now, however, at a time when preinvasive cervical abnormalities are occurring at epidemic levels, many women, especially those past menopause who do not get regular gynecological examinations, are failing to get annual Pap smears.
3.
Exceptions include CIS of the colon ( polyps ), the bladder ( preinvasive papillary cancer ), or the breast ( ductal carcinoma " in situ " or lobular carcinoma " in situ " ).
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