Tubulocystic carcinoma of the kidney.

Tubulocystic carcinoma (TCC) of the kidney is a unique, rare, and recently recognized neoplasm. Although originally considered a low-grade collecting duct carcinoma, TCC is now considered to be a distinct entity. TCC should be considered in the differential diagnosis of cystic renal neoplasms.

Solid pseudopapillary neoplasm collides with a well-differentiated pancreatic endocrine neoplasm in an adult man: case report and review of histogenesis.

Objectives: Solid pseudopapillary neoplasm (SPN) of the pancreas is a rare, clinicopathologically distinct neoplasm with a tendency to affect young women. The histogenesis of SPN is not well defined. Pancreatic endocrine neoplasms (PENs) are also uncommon tumors of the pancreas.

Prospective trial evaluating electrical impedance scanning of thyroid nodules before thyroidectomy: final results.

Background: Electrical impedance scanning (EIS) identifies tissue impedance changes associated with malignancy. Methods to distinguish benign from malignant thyroid nodules, particularly in patients with indeterminate cytology are lacking.

Purpose: To determine the diagnostic accuracy of EIS in the preoperative evaluation of thyroid nodules.

Prospective randomized study comparing sentinel lymph node evaluation with standard pathologic evaluation for the staging of colon carcinoma: results from the United States Military Cancer Institute Clinical Trials Group Study GI-01.

Background: The principal role of sentinel lymph node (SLN) sampling and ultrastaging in colon cancer is enhanced staging accuracy. The utility of this technique for patients with colon cancer remains controversial.

Purpose: This multicenter randomized trial was conducted to determine if focused assessment of the SLN with step sectioning and immunohistochemistry (IHC) enhances the ability to stage the regional nodal basin over conventional histopathology in patients with resectable colon cancer.

Determination of galectin-3 messenger ribonucleic Acid overexpression in papillary thyroid cancer by quantitative reverse transcription-polymerase chain reaction.

Galectin-3, a lectin-family protein that appears to be involved in malignant transformation, has been reported to be an accurate immunohistochemical marker for thyroid cancer. However, immunohistochemistry is a subjective method that can be difficult to apply to cytologic specimens. Therefore, we sought to develop an objective and quantitative assay to measure galectin-3 mRNA in thyroid tissue to enhance potential clinical use of galectin-3 in the molecular analysis of thyroid nodules.

Peripheral Nerve Sheath Tumors of the Thyroid Gland: A Series of Four Cases and a Review of the Literature.

Primary peripheral nerve sheath tumors (PNSTs) of the thyroid gland are exceptionally rare. Two schwannomas and two malignant PNSTs (MPNSTs), arising primarily within the thyroid gland, were identified in the files of the Endocrine Tumor Registry at the Armed Forces Institute of Pathology. The patients included two females, age 69 and 80 yr, and two males, age 18 and 33 yr.