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Immunological Medicine Volume 45, 2022 - Issue 1
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Rapid Communication

New mimic of relapse or regional lymph node metastasis in a cancer survivor: a case of mRNA COVID-19 vaccine-induced lymphadenitis with high FDG uptake

Yusuke Tsumuraa Division of Pediatrics, Shizuoka Cancer Center, Shizuoka, Japan;b Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
,
Koiku Asakurac Division of Diagnostic Radiology, Shizuoka Cancer Center, Shizuoka, Japan
,
Ikuko Takahashia Division of Pediatrics, Shizuoka Cancer Center, Shizuoka, Japan
,
Mitsuko Akaihataa Division of Pediatrics, Shizuoka Cancer Center, Shizuoka, Japan
,
Yoshiyuki Takahashib Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
&
Yuji Ishidaa Division of Pediatrics, Shizuoka Cancer Center, Shizuoka, JapanCorrespondence[email protected]
Pages 45-47 | Received 27 May 2021, Accepted 26 Oct 2021, Published online: 16 Dec 2021

Figures & data

Figure 1. (A) 3 D MIP 18F-FDG PET image in coronal view shows increased uptake in the left axillary lymph nodes (SUVmax, 12.7). In the left deltoid muscle, no increase in FDG uptake was observed. (B) Axial view shows the same finding as the 3 D MIP image.

Figure 1. (A) 3 D MIP 18F-FDG PET image in coronal view shows increased uptake in the left axillary lymph nodes (SUVmax, 12.7). In the left deltoid muscle, no increase in FDG uptake was observed. (B) Axial view shows the same finding as the 3 D MIP image.

Figure 2. (A) MRI T2-weighted image shows enlarged lymph nodes with normal hilum. (B) The ultrasonographic image shows enlarged lymph nodes (3.5 mm × 9 mm, yellow arrows) with cortical hypertrophy. The nodal hilum was confirmed to be normal. (C) Color doppler image shows normal intranodal and perinodal blood flow.

Figure 2. (A) MRI T2-weighted image shows enlarged lymph nodes with normal hilum. (B) The ultrasonographic image shows enlarged lymph nodes (3.5 mm × 9 mm, yellow arrows) with cortical hypertrophy. The nodal hilum was confirmed to be normal. (C) Color doppler image shows normal intranodal and perinodal blood flow.

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