Malignant myopericytoma originating from the colon: A case report

Table 1 Clinical features of reported malignant myopericytomas

Case	Sex/age	Site	Presenting symptoms	Treatment	Follow up	Ref.
1	F/81	Left side of neck	Rapidly growing painless mass	Excision	Liver metastasis 9 months after diagnosis. Alive with disease at 24 months	McMenamin and Fletcher[14], 2002
2	M/46	Left posterior thigh	Painful deep-seated intermuscular mass	Excision, postoperative adjuvant radiotherapy	Metastasis to the heart, brain, liver, and bone after 6 months. Death from the disease at 7 months	McMenamin and Fletcher[14], 2002
3	M/19	Dermis/subcutaneous tissue of the right heel	Painful mass	Below-knee amputation	Metastatic disease and death within 1 yr	McMenamin and Fletcher[14], 2002
4	F/80	Superficial mass of the left upper arm	Superficial painless mass	Marginal excision followed by wide excision	No metastasis. Discharged after 8 months of follow-up	McMenamin and Fletcher[14], 2002
5	F/67	Mass in the superior mediastinum	Short history of superior vena cava obstruction	Excision of cutaneous metastatic deposit	Metastasis disease to the skin and subcutaneous tissue. Died of respiratory failure within 1 month	McMenamin and Fletcher[14], 2002
6	M/61	Lower leg	Subcutaneous painless mass	Marginal excision, recurrence after 12 months treated by wide excision	Disease free a 3 yr	Mentzel et al[9], 2006
7	M/30	Lower leg	Obstructive periampullary mass with jaundice	Biopsy and pancreaticoduodenectomy	Liver metastasis 8 months after diagnosis	Ramdial et al[15], 2011
8	M/52	Floor of the left atrial wall	Sudden decrease in left vision	Excision of cardiac mass. Excision of metastatic brain tumor followed by γ-knife radiotherapy. Laminectomy and vertebral fixation due to vertebral metastases	Alive with metastatic disease at 8 months	Mainville et al[12], 2015
9	M/38	Intradural tumor of the lower spine (L5/S1)	Progressing painful in the right calf during sport	Excision	Disease free after 18 months	Holling et al[16], 2015
10	M/65	Dermis/subcutaneous tissue of the right arm	Enlarging painless mass	Excision	Disease free after 5 months	Patrick et al[13], 2016
11	F/15	Left shoulder region	Slowly growing mass	Excision, postoperative chemotherapy and radiotherapy	Disease free after 18 months	Binesh et al[17], 2016
12	M/56	Subcutaneous tissue left armpit	Pain of left shoulder mass	Preoperative chemotherapy, excision	Disease free after several years	Chen et al[18], 2017
13	M/33	Intracranial	New onset seizures	Excision	Disease free after 12 months	Conradie et al[19], 2021
14	M/65	Colon	Right upper quadrant pain	Excision	Metastatic disease to the liver and death within 1 yr	This case