A Case of Recurrent Mesocolon Myxoid Liposarcoma and Review of the Literature

Table 1

Liposarcoma classification and characteristics according to the World Health Organisation classification of tumours [5].

Type	Incidence	Recurrence	Prognostic factor	Mortality rate	Survival
Atypical lipomatous tumor “ALT”/well differentiated “WD”	40–45%	Lesions located in a surgically amenable soft tissue do not recur following WLE with clear margin	Anatomic locations “deep soft tissue liposarcoma carries high risk”	0% for ALT of extremities to 80% for WD in the retroperitoneum	6–11 years when followed up for 10–20 years
Dedifferentiated	10%	40% local recurrence and 15–20% for distant metastasis	Anatomic locations (retroperitoneum carries the worst clinical behaviour)	28–30% at 5-year followup (this figure is higher at 10–20-year followup)	—
Myxoid	10%	Prone to recur locally and one-third develop metastasis	High histological grade (≥5% RC areas), presence of necrosis, and TP53 overexpression carries unfavourable prognosis	—	—
Pleomorphic	5%	30–50% metastasis rate	Tumour depth, size, >20 mitosis in 10 HPFs, and presence of necrosis carries a worse prognosis	40–50% mortality	Patient dies within a short period of time
Mixed type	Extremely rare	—	—	—	—