Malignant solitary fibrous tumor of the greater omentum: A case report and review of literature

Table 1 Since 1963, a total of 13 cases of malignant solitary fibrous tumors of the greater omentum have been reported, and our patient is the fourteenth

Ref.	Age/gender	Chief complaint	Suspected diagnosis	Size	Mitosis/ HPF	Immunohistochemical staining	Pathological diagnosis	Surgical treatment	Chemotherapy	Follow-up	Recurrence and metastasis
Forman et al[7], 1952	40/M	Abdominal pain, rectal and vaginal pressure	Ovarian cyst	5 cm	NA	NA	HPC	Tumor resection and partial omentectomy	No	Recurrence and metastasis in 1 year	Rectum invasion after 11 mo
Stout et al[8], 1963	57/F	NA	NA	11 cm × 7 cm × 5 cm	2/50	NA	HPC	NA	No	NA	NA
Stout et al[8], 1963	64/M	Pain, swelling of the abdomen	NA	28 cm × 20 cm × 15 cm	11/50	NA	HPC	Tumor resection, omentectomy, transverse colon and the gastrocolic omentum	No	Died of disease	Distant metastasis on lung and liver
Imachi et al[9], 1990	62/F	Abdominal distension and pain, increasing abdominal girth, diarrhea, and weight loss	Malignant ovarian tumor	24 cm × 20 cm × 12 cm	12/10	Positive for vimentin, negative for S-100 protein, myoglobin, desmin, actin, and factor VIII	HPC	Tumor resection, omentectomy, and hysterectomy	Applied	Recurrence after 1 yr	Implant in the peritoneum and the mesentery were found after 1 yr
Schwartz et al[10], 1991	40/Unknown	Abdominal pain, abdominal mass, early satiety, weight loss	NA	NA	NA	NA	HPC	Tumor resection	Applied	Tumor spread after 18 mo. Died in 2 mo	Tumor wide spread
Cajano et al[11], 1995	49/F	Left hypochondrial abdominal pain	NA	7 cm	NA	NA	HPC	Tumor resection and omentectomy	Applied	Recurrence after 9 mo	Intraperitoneal and liver metastases after 9 mo
Ahmad et al[12], 2004	74/F	Abdominopelvic mass	Malignant ovarian tumor	NA	NA	NA	HPC	Tumor resection	NA	Died of disease	NA
Slupski et al[13], 2007	61/M	Left lumbar pain	NA	5, 1, and 12 cm	NA	NA	HPC	Tumor and liver segment resection, diaphragm clearance	No	Recurrence after 18 yr	Recurrence after 18 yr, 3 metastases were found
Salem et al[14], 2008	60/M	Intermittent periumbilical pain, weight loss, abdominal distension	NA	24 cm × 19 cm × 10 cm	25	Positive for CD34 and CD99, negative for SMA, desmin, S-100 protein and C-kit	SFT	Tumor resection	No	Uneventful recovery	No
Prakash et al[15], 2009	45/F	Lower abdominal pain and dysuria	Hemangiopericytoma	21 cm × 16 cm × 13 cm	NA	NA	HPC	No	Applied	Symptoms decreased	No
Rodriguez Tarrega et al[2], 2016	34/F	Unremarkable	NA	6 cm	13/10	Positive for CD34, CD99, negative for SMA, desmin, kit and DOG-1	SFT	Tumor resection and omentectomy	No	Disease-free in 32-mo follow-up	No
Vasdeki et al[16], 2018	72/M	Recurrent mass of the anterior abdominal wall	NA	11 cm × 10.4 cm × 10.7 cm, 8 cm × 6.5 cm and 7.5 cm × 5.7 cm	< 4/10	Positive for vimentin, CD34 and CD99	HPC	Tumor resection and omentectomy	No	Recurrence twice in 19 yr	2 lesions in the omentum in 2011, 3 lesions in the omentum in 2018
Jung et al[17], 2019	57/M	Asymptomatic	NA	18 cm × 11 cm × 6.2 cm	5-6/HPF	Positive for STAT6 and CD34	SFT	Tumor resection andomentectomy	No	Uneventful recovery	No
Current case		Abdominopelvic mass	GIST	27 cm × 21 cm × 9 cm	30/10	Positive for vimentin, weakly positive for DOG-1, CD99, and bcl-2; negative for STAT6, SMA, and CD34	SFT	Tumor resection, omentectomy, mesentery clearance	No	Died in 1.5 yr	Tumor recurrent and metastasis in 1.5 yr

M: Male; F: Female; HPC: Hemangiopericytoma; SFT: Solitary fibrous tumor; GIST: Gastro-intestinal stromal tumor; NA: Not available (not mentioned).