title: Light chain multiple myeloma presenting with spinal plasmacytoma: Unusual radiological appearance mimicking giant cell tumor.
abstract: Plasmacytoma, an initial presentation of multiple myeloma, is extremely rare and an unusual cause of spinal cord compression in a young male. A 35-year-old man presented with complaints of progressive weakness and tingling of bilateral lower limbs, severe backache for 3 months, and bladder and bowel incontinence for 1 week duration. Imaging demonstrated lytic destruction of 10 th and 11 th dorsal vertebrae with large soft tissue component and compression of the spinal cord. Biopsy was performed under computed tomography guidance and the histopathology demonstrated presence of plasmacytoma. Serum electrophoresis and bone marrow examination confirmed the diagnosis of light chain multiple myeloma. Though the magnetic resonance imaging the appearance of spinal plasmacytoma is nonspecific, a minibrain appearance has been considered pathognomonic. This case is reported for the unusual radiological appearance of this entity mimicking giant cell tumor.
authors.forename: Bhawna
authors.initials: B
authors.lastname: Satija
authors.affiliation: Department of Radiodiagnosis, Employees State Insurance Hospital and Post Graduate Institutue of Medical Science and Research, Delhi, India.
authors.forename: Rajat
authors.initials: R
authors.lastname: Gupta
authors.forename: Sanyal
authors.initials: S
authors.lastname: Kumar
authors.forename: Raj
authors.initials: R
authors.lastname: Chandoke
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005870:Giant Cell Tumors / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008297:Male; D009101:Multiple Myeloma / Q000000981:diagnostic imaging* / Q000473:pathology; D010954:Plasmacytoma / Q000000981:diagnostic imaging* / Q000473:pathology; D011859:Radiography; D013117:Spinal Cord Compression / Q000000981:diagnostic imaging*; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology