Cytological findings for the diagnosis of primary thyroid mucosa-associated lymphoid tissue lymphoma by fine needle aspiration.

Objective: We examined cytological findings for the diagnosis of primary thyroid mucosa-associated lymphoid tissue (MALT) lymphoma by fine needle aspiration.

Study Design: During the study period of 4 years, a total of 101 cases including 51 MALT lymphomas, 20 Hashimoto's thyroiditis (HT), and 30 diffuse large-cell B-cell lymphomas were cytologically examined. MALT lymphomas were divided into 44 common MALT and 7 MALT lymphomas with extreme plasmacytic differentiation (MALT-EPCD).

Cytologic findings of primary thyroid MALT lymphoma with extreme plasma cell differentiation: FNA cytology of two cases.

We report fine-needle aspiration cytology (FNAC) obtained from two cases of mucosa-associated lymphoid tissue (MALT) lymphoma with extreme plasma cell differentiation. The patients were 61-year-old and 69-year-old Japanese women presenting with thyroid swelling. The smears contained numerous plasma cells, lymphocytes with plasma cell differentiation and scattered centrocyte-like (CCL) cells.

HIV-unrelated benign lymphoepithelial cyst of the parotid glands containing lymphoepithelial lesion--like structures: a report of 3 cases.

Benign lymphoepithelial cyst (BLC) of the salivary gland is uncommon. Among report of these lesions, there were no previous cases of lymphoepithelial lesion (LeL) in human immunodeficiency virus type-1 (HIV-1) unrelated BLC. This study reports 3 cases of HIV-unrelated BLC containing LeL-like structures.

MALT type lymphoma demonstrating prominent plasma cell differentiation resembling fibrous variant of Hashimoto's thyroiditis: a three case report.

Fibrous variant of Hashimoto's thyroiditis (HT) is characterized by marked fibrous replacement of one third or more of the thyroid parenchyma. We present here three cases of mucosa associated lymphoid tissue (MALT) type lymphoma demonstrating prominent plasma cell differentiation resembling fibrous variant of HT. Histologically, thyroid structures were disturbed by a diffuse and focally nodular infiltration by mature plasma cells and cells with plasma cell differentiation against a background of prominent hyalinosis.

Angiogenic factors in normal endometrium and endometrial adenocarcinoma.

In the endometrium, angiogenesis plays important roles not only in tumor growth but also in the menstrual cycle. The purpose of the present paper was to investigate immunohistochemically the correlation between angiogenic factor expression and angiogenic score in normal and neoplastic endometrium. Immunohistochemical staining for vascular endothelial growth factor (VEGF), angiopoietin (Ang)-1, Ang2, Tie2, CD34 and CD105 was performed on formalin-fixed and paraffin-embedded tissues from 31 normal endometrium and 85 endometrial adenocarcinoma.

Küttner's tumor of the submandibular glands: report of five cases with fine-needle aspiration cytology.

Küttner's tumor (KT) is a benign tumor-like lesion of the salivary gland that mimics neoplasm clinically because of presentation as a hard mass. Recently, the histomorphological and immunohistochemical findings of this lesion have been analyzed, and differential diagnostic problems relating to salivary gland lymphoma have been discussed. However, currently there is little information on the cytological findings of those lesions.