Table 2

Major clinical and morphologic features of reported malignant mesenchymal tumor of urinary bladder

Age/Sex

Size of tumor

Histology of sarcomatoid component

AJCC stage of sarcoma

Management

Clinical behavior

Case 1

[4]

83/M

NA

Reported as cancerous mixed tumors

NA

NA

NA

Case 2

[5]

44/F

NA

Reported as osteogenic leiomyosarcoma

NA

NA

NA

Case 3

[7]

80/M

18 × 10 × 9 cm

Malignant pleomorphic spindle cells with leiomyomatous, chondromatous, osteoid and myxomatous differentiation

T2bN0M0, Stage III

Refused total cystectomy and received chemotherapy and radiotherapy

Died 22 months after diagnosis

Case 4

[6]

72/M

NA

Predominantly a leiomyosarcomatous component with foci of malignant bone, cartilage and myxomatous areas.

NA

NA

NA

Present case

78/M

14 × 13 × 7 cm

Malignant pleomorphic spindle cells with leiomyomatous, rhabdoid chondromatous, osteoid and myxomatous differentiation

T2bN0M0, Stage III

Receive total cystectomy

Alive 2 month after diagnosis

Abbreviation: NA, not available.

Li et al. Diagnostic Pathology 2011 6:35   doi:10.1186/1746-1596-6-35