30 December 2024
: Case report 
B-Acute Lymphoblastic Leukemia/Lymphoblastic Lymphoma Mimicking Fibrosing Mediastinitis: A Case Report and Diagnostic Insight
Unknown etiology, Challenging differential diagnosis, Unusual or unexpected effect of treatment
Aya Kitamura ABCDEF 1, Shigehisa Yanagi ABCDEFG 1*, Kotaro Shide
ABCDEF 2, Yuichiro Sato ABCDE 3, Ayako Kamiunten BDE 2, Yasuhiro Yamanari BE 1, Akiko Kitamura E 1, Makoto Sumiyoshi E 1, Yasuharu Oda E 1, Hironobu Tsubouchi E 1, Kazuya Shimoda ADEF 2, Taiga Miyazaki ADEF 1
DOI: 10.12659/AJCR.945804
Am J Case Rep 2024; 25:e945804
Figure 5. The onset of B-acute lymphoblastic leukemia/lymphoblastic lymphoma (B-ALL/LBL). (A) Blast in the peripheral blood. (B, C) Bone marrow (BM) biopsy. BM hypercellularity with increased lymphocyte-like blasts which exhibited immunoreactivity for terminal deoxynucleotidyl transferase (TdT) was observed. (D, E) Left hilar lymph node (#11L) biopsy. Infiltration of TdT-positive blasts was observed. A: 1,000×, B–E: 400× magnification. A: May-Giemsa stain, B, D: Hematoxylin and eosin (H&E) stain.