BACKGROUND Extranodal natural killer (NK)/T-cell lymphoma is a subtype of lymphoma that is derived from NK cells. It is considered as an aggressive form of non-Hodgkin's lymphoma because of frequent relapses and resistance to treatment. Relapsed NK/T-cell lymphoma often follows a fulminant course that is refractory to conventional chemotherapy treatment. METHODS Several patients with extranod...

Extranodal natural killer cell (NK) T lymphoma (ENKL) is a rare type of non Hodgkins lymphoma, accounting for 5% 10% total NHL cases.

BACKGROUND The subtype distribution of lymphoid neoplasms in Southwest China was analyzed according to WHO classifications. This study aims to analyze subtype distribution of lymphomas in southwest China. METHODS Lymphoid neoplasms diagnosed within 9 years in a single institution in Southwest China were analyzed according to the WHO classification. RESULTS From January 2000 to December 2008...

Nasal extranodal natural killer/T-cell lymphoma, which is a highly aggressive disease, is more frequently seen in Asia than in Western countries. No consensus has been reached on the management of the disease and the survival depends on the stage of the disease. Localized NK/T-cell lymphoma often responds to radiotherapy well. However, patients with advanced disease or recurrence after chemorad...

A population of cells that expresses the NK cell receptor NKp46 and produces interleukin (IL)-22 have recently attracted considerable attention. The identity of these cells is still the subject of speculation, being variably defined as a novel NK cell subset or as a population containing conventional NK (cNK) cell precursors. In this issue, two studies shed light on this conundrum, demonstratin...

Mature Tor natural killer (NK)/T-cell lymphoma makes up only 5% to 18% of all cases of non-Hodgkin lymphoma (NHL). The relative frequency and optimal therapy for these disorders is not well defined. Extra nodal NK/T-cell lymphoma is a distinct entity in the World Health Organization (WHO) classification [1]. It is more prevalent in Asians and Native Americans, occurs most often in adults, and a...

At least one quarter of non-Hodgkin's lymphomas (NHL) arise from tissue other than lymph nodes and even from sites which normally contain no lymphoid tissue. These forms are referred to as primary extranodal lymphomas [1,2]. Since these tumours, numerous when considered together, are widely distributed throughout the body, it is difficult to find adequate series of any given site. Moreover, man...

Nasal type extranodal natural killer (NK) NK-cell/T-cell lymphoma (NKTCL) is a rare extranodal lymphoma of NK-cell or T-cell origin that most commonly affects immunocompetent middle-aged men of Asian or Native American descent [1]. The pathogenesis is not understood completely, but it is related in part to infection of the tumor cells with Epstein-Barr virus (EBV) [2]. Around 6-7% of all non-Ho...