Rectal adenocarcinoma metastatic to the tonsil; PET-CT observations with pathological confirmation: A case report.

Metastasis of rectal adenocarcinoma develops by lymphatic or hematogenous spread. The usual sites of metastasis from rectal adenocarcinoma include local and distant lymph nodes, the liver and the lungs. The current case report presents a unique case of a mass that was identified in the tonsil by positron emission tomography-computed tomography (PET-CT), indicating a metastasis from rectal adenocarcinoma.

[Clinicopathologic and immunohistochemical study of 23 cases of mesenchymal chondrosarcoma].

Objective: To study the clinicopathologic and immunohistochemical features of mesenchymal chondrosarcoma.

Methods: The clinical and histologic features of 23 cases of mesenchymal chondrosarcoma were analyzed. Immunohistochemical study was also performed in 14 of the cases.

Reproducibility of the Nottingham modification of the Scarff-Bloom-Richardson histological grading system and the complementary value of Ki-67 to this system.

Background: The reproducibility of the Nottingham modification of the Scarff-Bloom-Richardson (NSBR) histological grading system for invasive breast cancer (IBC) adopted by the World Health Organization (WHO) has previously not been studied in Chinese hospitals. The proliferation marker, Ki-67, has been widely applied in detecting IBC. The objective of this study was to assess the reproducibility of the NSBR system among Chinese pathologists and the complementary value that Ki-67 brings to this system.

[Intravascular large B-cell lymphoma: report of two autopsy cases with literature review].

Objective: To study the clinicopathologic features of intravascular large B-cell lymphoma (IVLBCL).

Methods: Two autopsy cases of IVLBCL were retrieved from the archival file. The clinicopathologic features, immunohistochemistry and molecular findings were studied.

Myofibroblastic sarcomas: a clinicopathological study of 20 cases.

Background: Myofibroblastic sarcoma was used to be a controversial neoplasm. This study investigated the clinicopathological features of 20 cases of myofibroblastic sarcoma arising in different locations.

Methods: The paraffin-embedded tissue samples from 20 cases of patients with myofibroblastic sarcoma were stained immunohistochemically, and 5 cases examined by electron microscopy.