Luying Tang

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1. Introduction The blood glucose level refers to the venous plasma glucose level. A normal blood glucose value refers to the blood glucose range of 3.9–6.1 mmol/L in fasting conditions. According to the criteria, a blood glucose level <3.9 mmol/L is hypoglycemia, and blood glucose >10 mmol/L is hyperglycemia [1,2].

Diagnostic Pathology volume 16, Article number: 74 (2021) Cite this article 154 Accesses 2 Altmetric Metrics details Abstract Background With widespread clinical application of imaging techniques, renal space-occupying lesions have been identified at an increasing frequency. Here, we report two rare cases, Castleman disease (CD) and IgG4-related disease (IgG4-RD), presenting primarily with the symptoms and imaging findings of kidney malignancy.