Pulmonary Hyalinizing Granuloma Mimicking Primary Lung Cancer: An Unusual Case Involving a Pulmonary Tumor

Table 1

Summary of the 20 pulmonary hyalinizing granuloma cases reported in Japan.

Variables		Number
Mean age (range)	46	(28–65)
Gender	Male	12 (60%)
	Female	8 (40%)
Single or multiple	Single	4 (20%)
	Multiple	16 (80%)
Comorbidity	Primary lung squamous cell carcinoma	1 (5%)
	Emphysematous merger interstitial pneumonia	1 (5%)
	Collagen disease	1 (5%)
	Hypergammaglobulinemia	1 (5%)
	Non	15 (75%)
Preoperative diagnosis	Lung cancer	1 (5%)
	Lung cancer suspicion	1 (5%)
	Metastatic lung cancer suspicion	2 (10%)
	Thymoma suspicion	1 (5%)
	None	15 (75%)
Surgical procedure	Lobectomy	5 (25%)
	Partial excision	7 (35%)
	Follow up	5 (25%)
Radiological finding	FDG-PET/CT performed in 4 cases including this case
	SUV max range 2.3–9.5