Obviously, the latter finding supports the thyroid-like low-grade nasopharyngeal papillary adenocarcinoma
nomenclature sometimes applied.
Metastases to the cervical lymph nodes, which exhibit the features of papillary adenocarcinoma
, are usually interpreted as a thyroid malignancy.
Villoglandular papillary adenocarcinoma
of cervix associated with cervical intraepithelial neoplasia: a case report and review of literature.
In compressed lung tissue microscopic sections of adenocarcinoma in situ may mimic papillary adenocarcinoma
These findings were consistent with a salivary gland cystadenocarcinoma of the mobile tongue, low-grade papillary adenocarcinoma
Variant: Well-Differentiated Villoglandular Papillary Adenocarcinoma
1,6,7) Most authors agree that if the histologic features are predominately papillary, the tumor should be identified as a low-grade papillary adenocarcinoma
This artifact in the lesion architecture led to an erroneous diagnosis of papillary adenocarcinoma
rather than lepidic pattern disease.
If a tumor has lepidic growth, but the alveolar spaces are filled with papillary structures, the tumor is classified as papillary adenocarcinoma
6,7) As shown, an aggressive digital papillary adenocarcinoma
may exhibit cystic areas with true papillary formations of cuboidal epithelium.
The differential diagnosis includes other oral cavity minor salivary gland tumors such as PA, adenoid cystic carcinoma, and sometimes low-grade papillary adenocarcinoma
of salivary gland origin (LGPASO).
We have also seen 2 examples with ciliated epithelium and one of these had an associated high-grade papillary adenocarcinoma
with pancreatobiliary-type features.