Japanese Journal of Clinical Oncology, Vol 29, Issue 3 171-178, Copyright © 1999 by Foundation for Promotion of Cancer Research
R Horie, Y Yatomi, T Wakabayashi, Y Ohno, M Eriguchi, M Higashihara, K Nakahara and T Watanabe
To understand more fully the clinicopathological features of primary
gastric T-cell lymphomas (PGTL), we report two cases of PGTL and review the
literature. The present cases were not associated with human T-cell
leukemia virus type 1 (HTLV-1) and were at clinical stage IIE. In both
cases, T-cell origin of the lymphoma cells was diagnosed
immunohistochemically. The clinical courses of these two cases were
different: one followed a very aggressive clinical course and the patient
died 6 months after the diagnosis, whereas the other patient survived more
than 2 years without adjuvant chemotherapy. Clinicopathological features of
23 patients with PGTL are summarized with regard to their differences from
primary small intestinal T-cell lymphomas (PSITL) and by association with
HTLV-1. The median age at onset of PGTL was 58 years. The gender ratio was
male-dominant (M:F = 2.3:1). About two-thirds (10 of 17) of PGTL cases had
evidence of HTLV-1 infection. The most common presenting symptom for PGTL
was upper abdominal discomfort and/or pain (76%), whereas that in PSITL was
weight loss (61%) and diarrhea (42%). Typical lesions for PGTL were large
ulcerations at the corpus to antrum. Neoplastic cells had no typical
morphological characteristics for PGTL including HTLV-1-associated cases.
CD3+4+8- was the most frequently observed surface phenotype of PGTL cells.
Laboratory findings at diagnosis were not informative. Most patients were
treated by gastrectomy with or without chemotherapy. PGTL, excluding that
with HTLV-1, showed better prognosis than PSITL, although PGTL with HTLV-1
had a poorer prognosis.
ORIGINAL ARTICLE
Primary gastric T-cell lymphomas: report of two cases and a review of the literature
Department of Pathology, Institute of Medical Science, University of Tokyo, Japan.
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