Bone and soft tissue tumors presenting as sciatic notch dumbbell masses: A critical differential diagnosis of sciatica

Table 1 Clinical features of 8 patients with sciatic notch dumbbell tumors

Case	Age/sex	McCormick scale	Histology	Patient delay (mo)	Physician delay (mo)
1	41/F	II	Solitary fibrous tumor	26	7
2	12/F	I	UPS	12	4
3	27/F	III	Neurinoma	20	3
4	36/F	II	Carcinosarcoma	2	1
5	81/M	IV	Osteosarcoma	5	2
6	15/F	IV	UPS	2	1
7	35/F	II	Ewing's sarcoma	15	2
8	38/M	III	MPNST	12	1

UPS: Undifferentiated pleomorphic sarcoma; MPNST: Malignant peripheral nerve sheath tumor; M: Male; F: Female.

Table 2 Summary of chief complaints and physical examination findings in patients with sciatic notch dumbbell tumors

	SNDT (n = 8)
Sciatica	8
Pain at rest	7
Back pain	0
Palpable mass in the buttock	3
Buttock tenderness	7
Motor weakness	4
Sensory loss testing	6
Positive SLRT	6

SNDT: Sciatic notch dumbbell tumor; SLRT: Straight leg rising test.

Table 3 Radiological features of 8 patients with sciatic notch dumbbell tumors

Modalities	Descriptions	Value
X-ray	Bone destruction	2
	Matrix mineralization	1
MRI	Tumor size (cm)	8.4 ± 2.0 (range, 3.9 to 10.6)
	Indistinguishable tumor boundary	5
	Connection of the sciatic nerve	3
	Mass on lumbar MRI sagittal image	2
CT	Osteolytic bone destruction	5
	Tumor calcification	1
	Enlargement of sciatic foramen	4

MRI: Magnetic resonance imaging; CT: Computed tomography.