Kidney inflammatory myofibroblastic tumor masquerading as metastatic malignancy: A case report and literature review

Table 1 Summary of clinical features of reported cases of kidney inflammatory myofibroblastic tumor

Case	Ref.	Age (yr)/gender	Clinical features	Location	Size (cm)	Treatment	Follow-up (mo)	Recurrence
1	Heerwagen et al[6]	75/M	Accident finding, anemia	Rt lower	10	Nephrectomy	10	No
2	Gwynn et al[10]	46/M	Abdominal discomfort, gastrointestinal symptoms	Rt	13	Nephrectomy	13	No
3	Tarhan et al[23]	10/F	Recurrent high fever, headache	Rt middle	NA	Nephrectomy	18	No
4	Wu et al[32]	43/M	Low back pain, hematuria	Lt renal pelvis	1.5	Nephrectomy	26	No
5	Li et al[36]	61/M	Lethargy, night sweats, weight loss	Rt and Lt	NA	Biopsy, corticosteroid	48	No
6	Liang[28]	60/F	Accident finding	Lt upper	10.1	Partial nephrectomy	63	No
7	Li et al[9]	48/F	Accident finding	Lt upper	2.9	Nephrectomy	6	No
8	Dogan et al[7]	3/M	Low back pain, recurrent fever	Rt upper	6	Nephrectomy	6	No
9	Ho et al[14]	3/F	Abdominal pain, intermittent fever	Lt UPJ	8	Conservative surgery	9	No
10	Sun et al[21]	54/F	Accident finding	Rt upper	1.5	Nephrectomy	NA	NA
11	Nakamura et al[26]	60/M	Accident finding	Lt middle	5.5	Nephrectomy	NA	No
12	Tazi et al[15]	56/M	Low back pain, weight loss	Rt lower	6	Nephrectomy	NA	NA
13	Sugimoto et al[35]	20/F	High fever, right lumbago	Rt renal pelvis	2.5	Antibiotics	NA	NA
14	Babu et al[24]	51/M	Low back pain	Lt upper	8.2	Nephrectomy	NA	NA
15	Ishikawa et al[25]	38/M	Accident finding	Lt upper	11	Nephrectomy	NA	NA
16	Khallouk et al[39]	57/M	Low back pain, hematuria	Rt middle	9	Nephrectomy	14	No
17	Taheri et al[40]	15/F	Low back pain, hematuria, weight loss	Lt upper	13.5	Nephrectomy and adrenalectomy	12	No
18	Selvan et al[41]	56/M	Accident finding	Lt middle	NA	Nephrectomy	12	No
19	Leroy et al[42]	37/M	Low back pain, hematuria	Rt renal pelvis	NA	Nephrectomy	12	No
20	Navale et al[30]	32/M	Lower abdominal pain, urinary tract symptoms	Rt lower	4.5	Nephrectomy	18	No
21	Bektas et al[43]	51/F	Low back pain	Lt upper	4.5	Nephrectomy and adrenalectomy	18	No
22	Heerwagen et al[6]	40/F	Accident finding	Rt lower	7	Nephrectomy	24	No
23	Pothadiyil et al[44]	50/M	Low back pain	Lt	NA	Nephrectomy	24	No
24	Vujanić et al[45]	8/M	Painless gross hematuria	Rt lower	6	Nephrectomy	36	No
25	Epaulard et al[46]	60/M	Fever, weight loss, weakness, night sweats	Rt middle	3	Nephrectomy	3	No
26	Sugimoto et al[47]	61/M	Abdominal pain	Rt renal pelvis	3	Nephrourete-rectomy	3	No
27	Ryu et al[48]	61/F	Accident finding, weight loss, gastrointestinal symptoms	Lt lower	3	Nephrectomy	3	No
28	Iida et al[49]	54/F	Painless gross hematuria	Rt renal pelvis	4.7	Nephrourete-rectomy	44	No
29	Wang et al[50]	74/F	Low back pain, weight loss	Lt upper	8	Nephrectomy	66	No
30	Boo et al[51]	9/F	intermittent abdominal pain, weight loss	Lt upper	5.5	Nephrectomy and enlarged lymph dissection	6	No
31	Leroy et al[42]	54/F	Low back pain, hematuria	Lt renal pelvis	1.5	Nephrectomy	7	No
32	Petrescu et al[52]	57/M	Hematuria, minimal grade fever, right flank pain	Rt middle	2	Nephrourete-rectomy	NA	NA
33	Mukkamala et al[53]	54/M	Accident finding	Lt middle	4.7	Nephrectomy	NA	NA
34	Hori et al[54]	24/F	Accident finding	Lt	7.5	Nephrectomy	NA	NA
35	Yoshida et al[55]	44/M	Painless gross hematuria	Lt UPJ	NA	Nephrourete-rectomy	NA	NA
36	Bildirici et al[56]	42/F	Low back pain	Rt upper	7	Nephrectomy	NA	NA
37	Kobayashi et al[57]	50/M	Accident finding	Rt middle	3	Corticosteroid	NA	NA
38	Lee et al[58]	48/M	Accident finding	Rt middle	3.5	Partial nephrectomy	NA	NA
39	Iwaki et al[59]	73/M	General malaise, minimal grade fever	Lt lower	3.5	Nephrectomy	NA	NA
40	Kim et al[60]	60/M	Painless gross hematuria	Rt renal pelvis	1.6	Nephrectomy	NA	NA
41	Satoh et al[61]	61/M	Painless gross hematuria	Rt	1.8	Nephrourete-rectomy	NA	NA
42	Shah et al[62]	42/F	Abdominal pain, hematuria	Rt renal pelvis	6	Nephrectomy	NA	NA
43	Bildirici et al[56]	42/F	Low back pain	Rt upper	7	Nephrectomy	12	No
44	Dogan et al[7]	15/F	Abdominal pain, recurrent fever	Lt upper	7	Biopsy, antibiotics	8	No
45	Bell et al[63]	37/M	Abdominal pain, hematuria, fever	Lt upper	2.5	Nephrectomy	8	No
46	Ma et al[64]	42/F	Abdominal pain, nausea, fatigue, weight loss	Rt and Lt	NA	Biopsy, corticosteroid	NA	No
47	Tambo et al[65]	46/F	Accident finding, microscopic haematuria	Rt	5	Retroperitoneal tumor resection and additional right nephrectomy	9	No
48	Hattori et al[66]	60/F	Low back pain	Lt renal pelvis	4	Nephrourete-rectomy	NA	NA
49	Present case	77/F	Painless gross hematuria	Lt middle	4	Nephrectomy and adrenalectomy	22	No

M: Male; F: Female; Rt: Right; Lt: Left; NA: Data not available; UPJ: Uretero pelvic junction.