RMS occurs as two main histologic subtypes: alveolar (ARMS) and embryonal (ERMS) histologies.
The incidence of lymph node metastases from salivary gland cancer is dependent on the size of the primary tumour and the histologic subtype.
In addition, among patients with Grade II primary lung tumor, predominant histologic subtype in node metastases was not predictive of recurrence-free survival (P = 0.71) and overall survival (P = 0.38).
Although its prognosis is poor compared to gastric lymphoma, there are few studies analyzing the clinical features and survival outcomes of primary intestinal NHL according to primary site of involvement and histologic subtype.
Clustering of cancers was not associated with histologic subtype or primary tumor location.
Russell et al. observed that the concordance of the predominant histologic subtype in primary tumor and N2 lymph node metastases was 100% for micropapillary, 92% for solid, 42% for acinar, and 0% for papillary [ 11]; they defined concordance as "…the predominant subtype in the primary tumor is present and most prominent in the corresponding N2 metastases".
The nomogram we developed to predict LN metastasis in endometrial cancer is mainly based on primary tumoral characteristics (cancer grade, histologic subtype, depth of invasion, cervical involvement) and the training set was extracted from patients included in the SEER database who were treated between 1988 and 2007.
Previous reports have strongly supported the role of the predominant histologic subtype of the "primary lung tumor" as a prognostic factor.
9, 14, 22, 31 Deletions of p16 have been reported in up to 80% of primary pleural mesotheliomas, depending on the histologic subtype (90 100% of the sarcomatoid subtype, 70% of epithelioid and mixed subtypes).
45 Many clinical features contribute to rhabdomyosarcoma staging and risk grouping, including tumor size, location of primary tumor, degree of surgical resection, histologic subtype, and presence of nodal or metastatic disease.
