Digital papillary adenocarcinoma
. This malignant, papillary, sweat gland-derived tumor may have a deceptively bland cytomorphology (C).
Obviously, the latter finding supports the thyroid-like low-grade nasopharyngeal papillary adenocarcinoma
nomenclature sometimes applied.
The histopathological differential diagnosis included a primary sweat gland carcinoma (aggressive digital papillary adenocarcinoma
) as well as a metastatic adenocarcinoma from an upper gastrointestinal or pancreaticobiliary tract origin.
showed prominent intraglandular folding and projections with cuboidal to high columnar carcinoma cells lining the narrow bands of interstitial tissue.
of the renal pelvis and ureter producing carcinoembryonic antigen, carbohydrate antigen 19-9 and carbohydrate antigen 125.
Extremely well differentiated papillary adenocarcinoma
of the lung with prominent cilia formation.
In this case report, we describe the classical morphologic features of a pulmonary papillary adenocarcinoma
which resemble those of papillary thyroid carcinoma and discuss the utility of immunohistochemical staining in distinguishing primary from metastatic tumours.
Metastases to the cervical lymph nodes, which exhibit the features of papillary adenocarcinoma
, are usually interpreted as a thyroid malignancy.
Villoglandular papillary adenocarcinoma
of the uterine cervix: a clinicopathologic analysis of 13 cases.
These include Adenomyoma, Embryonal rhabdomyosarcoma, Leiomyoma, and even lesions like Schwannoma, Nabothian cyst, Decidualized stroma, Plasmacytoma, Villoglandular papillary adenocarcinoma
, Adenosarcoma, Non-hodgkin's lymphoma, Aggressive angiomyxoma, Gliosis of cervix etc.
The final diagnosis was a low-grade papillary adenocarcinoma
consistent with an ELST.
Intraductal neoplasm of the biliary tract has been called by various names: papillomatosis, papillary adenocarcinoma
of bile duct, mucin-producing papillary carcinoma, and intraductal papillary-mucinous neoplasm of bile duct, among others.