LCLC-RP are considered to be especially aggressive tumors with a dismal prognosis. Many published cases have shown short survival times after diagnosis. Some studies suggest that, as the proportion of<unk>  cells in the tumor increases, the prognosis tends to worsen, although this is most pronounced when the proportion of<unk>  cells exceeds 5%. With regard to "parent" neoplasms other than LCLC, adenocarcinomas with<unk>  features have been reported to have worse prognoses than adenocarcinomas without<unk>  features, although an "adenocarcinoma with<unk><unk> " tumor variant has not been specifically recognized as a distinct entity under the WHO-2004 classification system. There are case reports of<unk>  carcinomas recurring after unusually long periods, which is unusual for a fast-growing, aggressive tumor type. One report described a very early stage patient whose tumor recurred 6 years after initial treatment. Although rapidly progressive, fulminant courses seem to be the rule in this entity, long-term survival has also been noted, even post-metastectomy in late stage, distant metastatic disease.
Large-cell lung carcinoma with rhabdoid phenotype
Epithelial-myoepithelial carcinoma of the lung
Salivary gland–like carcinoma of the lung
Mucinous cystadenocarcinoma of the lung
Basaloid large cell carcinoma of the lung
Large cell neuroendocrine carcinoma of the lung
Plexiform angiomyxoid myofibroblastic tumor
Atypical pulmonary carcinoid tumour