atypical carcinoid

(redirected from moderately differentiated neuroendocrine carcinoma)

atypical carcinoid

An intermediate form of neuroendocrine tumour between low-grade malignant (typical carcinoid) and high-grade small cell carcinoma.

Prognosis
Nodal metastases in 70% (vs. 5% for carcinoids); 5-year survival is 60%.

atypical carcinoid

An intermediate form of neuroendocrine tumor between low-grade malignant–typical carcinoid and high-grade small cell carcinoma. See Carcinoid, Small cell carcinoma.
References in periodicals archive ?
Moderately differentiated neuroendocrine carcinoma (atypical carcinoid) of the larynx: A clinically aggressive tumor.
We report a rare case of moderately differentiated neuroendocrine carcinoma of the larynx.
Biopsy specimens of the mass were obtained, and they were later interpreted to represent an infiltrating, moderately differentiated neuroendocrine carcinoma (figure 1).
The final pathologic analysis identified residual nests of an infiltrating, moderately differentiated neuroendocrine carcinoma.
Moderately differentiated neuroendocrine carcinomas (atypical carcinoid or large-cell tumors) are the most common subtype (90% of cases).