title: [Testicular Tumor in a Patient with Delta Thalassemia Complicated with Hereditary Persistence of Fetal Hemoglobin].
abstract: A 30s male was diagnosed as having the left testicular tumor in 2010. He received the anti-neoplastic chemotherapy, and could achieve the complete remission. But, he relapsed with solitary retroperitoneal lymph node swelling in 2012, and he was referred to our hospital. Laboratory examination on his admission showed the significant increase of fetal hemoglobin (HbF) up to 16.4%. But, neither anemia nor hemolysis was found at that time. Coexistence of therapy-related myeloid neoplasm or HbF production by metastatic lesion was not definite. Isoelectrofocusing of his hemolysate showed the faint HbA2 in addition to dense HbF band. Molecular analysis of his Hb gene revealed the homozygous (G)gamma-158 (C-T) together with homozygous delta-77(T-C). From these findings, he was diagnosed as having hereditary persistence of HbF (HPFH) and homozygous delta thalassemia. The precise incidence of such combined genetic variation has been unknown because the majority of such cases seem to show no significant clinical symptoms as our case. Whereas, it seems necessary to remind the possibility of such genetic variation when adult patients with various acquired diseases such as testicular tumor or hematologic malignancies show the elevated HbF level.
authors.forename: Tohru
authors.initials: T
authors.lastname: Inaba
authors.forename: Bunta
authors.initials: B
authors.lastname: Shimomoto
authors.forename: Yuri
authors.initials: Y
authors.lastname: Hirose
authors.forename: Masao
authors.initials: M
authors.lastname: Shimotsuma
authors.forename: Akira
authors.initials: A
authors.lastname: Nanbu
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Komori
authors.forename: Terukazu
authors.initials: T
authors.lastname: Nakamura
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Yamashiro
authors.forename: Naohisa
authors.initials: N
authors.lastname: Fujita
mesh_terms: D000328:Adult; D005319:Fetal Hemoglobin / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D006720:Homozygote; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008297:Male; D009364:Neoplasm Recurrence, Local; D012187:Retroperitoneal Space; D013736:Testicular Neoplasms / Q000209:etiology* / Q000473:pathology; D055538:delta-Thalassemia / Q000150:complications* / Q000175:diagnosis / Q000235:genetics*
chemical_list: D005319:Fetal Hemoglobin