Primary Sacral Hydatid Cyst Mimicking a Neurogenic Tumor in Chronic Low Back Pain: Case Report and Review of the Literature.
Hydatid disease is caused by infection ofEchinococcus granulosus. Bone hydatid cyst presentation without hepatic affectation is infrequent and occurs in 0,5-2% of cases. This rare condition makes clinicians not always aware of the disease, and as a result, misdiagnosis of spinal echinococcosis is common. We present a case of a 48-year-old female patient with primary sacral hydatidosis. Chronic low back pain radiating to the left buttock was the only symptom. The magnetic resonance imaging (MRI) suggested a neurogenic tumor versus giant cell tumor. Biopsy and pathological study revealed a hydatid cyst. Anthelmintic and surgical treatment was performed. At 12 months after surgery, the patient is free of recurrence. In patients with chronic low back pain and a MR suggestive of neurogenic tumor, spinal hydatid cyst should be considered in the differential diagnosis. It is recommended the assistance of an anesthesiologist during biopsy to avoid an anaphylactic shock.
Department of Orthopedic Surgery, Vinalopó University Hospital, Alicante, Spain.
Manuel
M
Segura-Trepichio
Department of Orthopedic Surgery, Vinalopó University Hospital, Alicante, Spain.
Jose Manuel
JM
Montoza-Nuñez
Department of Orthopedic Surgery, Vinalopó University Hospital, Alicante, Spain.
David
D
Candela-Zaplana
Department of Anatomical Pathology, Vinalopó University Hospital, Alicante, Spain.
Josefa
J
Herrero-Santacruz
Department of Radiology, Vinalopó University Hospital, Alicante, Spain.
Fernando
F
Pla-Mingorance
Echinococcosis; giant cell tumor of bone; hydatid disease; low back pain; spinal cord neoplasms