Clinicopathological features and surgical outcomes of intraductal tubulopapillary
neoplasm of the pancreas: a systematic review.
After reclassification, our cohort included 8 unsatisfactory cases, 7 negative for
neoplasm cases, 19 lesions of unknown significance, 50 benign
neoplasm cases, 6 suspicious for malignancy, and 17 malignant
neoplasm cases (Figure).
BPDCN is generally known as a rare and clinically aggressive hematodermic
neoplasm occurring in the elderly (median age: 66 years old) with a male-to-female ratio of 3:1.
The cytologic category of oncocytic (Hurthle) cell
neoplasm mostly includes low-risk lesions: an institutional experience.
The classification of appendiceal mucinous
neoplasm constitutes a very broad diagnostic spectrum ranging from adenoma to mucinous adenocarcinoma (2).
The macrocystic or oligocystic variant of serous cystadenoma is uncommon and difficult to distinguish from mucinous cystic
neoplasm by imaging.
Meningiomas are classified according to the
neoplasm characteristics, such as tissue invasion, mitotic index, cellular pleomorphism, necrosis and extra neural metastasis, which are malignancy indicators, in addition to the classification in subtypes: meningothelial, fibromatous, transitional, psammomatous, among others (HIGGINS et al., 2017; LOUIS et al., 2016).
Noncontrast MRI identified a
neoplasm at the head of the pancreas which was consistent with SPN.
Solid pseudopapillary
neoplasm of the pancreas: A single institution experience of 14 cases.
Diagnosis of spindle cell
neoplasm of neural origin was established by strong, diffuse positive reactivity against S100 and negative reactivity for both CD68 and smooth muscle actin (ASMA) (Fig 1).
(a-c) H&E staining demonstrates a malignant spindle and epithelioid cell
neoplasm with increased mitotic activity ((c), arrow) and necrosis (not shown).
Petrella, "Blastic plasmacytoid dendritic cell
neoplasm," in WHO Classification of Tumors of Haematopoietic and Lymphoid Tissues, S.