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      Anaplastic Solitary plasmacytoma of mandible, masquerading as sarcoma.

      Pakistan Journal of Medical Sciences
      Pakistan Journal of Medical Sciences
      Radiology, Mandible, Plasmacytoma

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          Abstract

          Plasma cell neoplasm is characterized by a monoclonal neoplastic proliferation of plasma cells and solitary plasmocytoma of bone (SPB) is a localized form. It usually occurs in vertebrae and secondarily in long bones. Its presence in mandible is extremely rare event. A 48-year-old man consulted to our clinic with a chief complaint of pain in his mandible. Radiography revealed a destructive lesion in body and ramus. The initial pathologic evaluation revealed a high grade pleomorphic neoplasm. The diagnosis was confirmed by immunohistochemical markers. Overall, plasmacytoma with anaplastic features can be confused with high grade sarcoma clinically and histologically.

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          Solitary myeloma: clinical and prognostic features of a review of 114 cases.

          Within plasma cell disorders, solitary myeloma is rare as compared with multiple myeloma. In order to evaluate their relationship, the clinical findings for 114 patients with solitary myeloma were compared with those for 70 patients having classic multiple myeloma. The period of follow up ranged from a few weeks to twenty-four years, and 68.5% of those with solitary myeloma alive at ten years. Although only 23% of patients with solitary myeloma had local or widespread recurrence after two years, at ten years 85% had experienced disease progression. Comparison of the 85% with disease progression with patients with multiple myeloma revealed that solitary myeloma occurred at a younger age (mean 52.1 years), more frequently in men (60.5%), less commonly with initial spinal involvement (61.8%), but more commonly with neurologic problems associated with spinal involvement (25%), and that much more commonly, no monoclonal component was detectable in serum and/or urine at the time of initial diagnosis (82.5%). There were only two significant differences between those patients with (85%) and without (15%) progression at ten years; the patients were younger (mean, 45.7 years) and spinal involvement (26.7%). However, was less common among patients without progression, and component monoclonal always disappeared following treatment with surgery and/or radiation therapy. It is thus concluded that solitary myeloma and multiple myeloma are clearly different clinical entities; however, most patients with solitary myeloma do eventually have multiple myeloma.
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            Head and neck manifestations of plasma cell neoplasms.

            Multiple myeloma, solitary plasmacytoma of bone, and extramedullary plasmacytoma are plasma cell neoplasms. They represent distinct manifestations of a disease continuum, whereby the clinical findings are critical to diagnosis. Plasma cell neoplasms are histologically similar, and distinguishing one from the other has significant implications for treatment and survival. Plasma cell neoplasms are relatively unusual malignancies of the head and neck region. We present a case series of plasma cell neoplasms involving the skull base, paranasal sinus, larynx, and mandible as an introduction to a complete review of the literature on plasma cell neoplasms of the head and neck area.
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              Myeloma of the jaw bones: a clinicopathologic study of 33 cases.

              A clinicopathologic study of 33 cases of plasma cell neoplasm of the jaw bones was performed. The Mayo Clinic's pathology files through 1995 were reviewed for cases of plasma cell neoplasia involving the jaw bones. Clinical data, radiologic features, and follow-up data were obtained from the hospitals of origin, referring physicians, and Mayo Clinic files. The histopathologic features of the 33 tumors were studied. There were 21 (64%) male and 12 (36%) female patients, ranging in age from 25 to 81 years (mean, 57.7 years). Twenty-one tumors (64%) were classified as solitary plasmacytoma of bone (SPB) and 12 (36%) as multiple myeloma (MM). Among the SPB cases, 15 (71%) involved the maxilla, and 14 patients were men, with a mean age of 57.1 years. Abnormal serum protein was found in 22% of patients, and in nine patients (43%) the SPB converted to MM after a median of 20.7 months. Among the MM cases, seven (58%) affected the maxilla, seven patients were men with mean age of 58.3 years, and abnormal serum protein and Bence-Jones protein were found in 42% and 73% of the patients, respectively. Anaplastic histology was identified in seven (33%) SPB and six (50%) MM tumors, and amyloid was present in eight (38%) SPB and three (25%) MM tumors. Twelve (57%) SPB patients died of the disease after a median disease-free survival of 6.75 years, and the overall and disease-free survival rates at 5 and 10 years were 52%, 33%, 33%, and 24%, respectively. All MM patients died of the disease after a median survival of 17.6 months, and the 5-year and 10-year survival rates were 8% and zero. Eighty-six percent of the SPB patients with anaplastic histologic findings died of the disease (average survival, 3.8 years), whereas only 43% of those with classic histologic findings died of the disease (average survival, 11.75 years). Among MM patients, anaplastic histologic findings were associated with a 9-month average survival (26-month average survival for MM patients with classic histologic findings). SPB patients seem to have a better prognosis than MM patients, and 43% of SPB tumors convert to MM after an average of 20.7 months. Anaplastic histologic findings seem to be associated with lower survival rates and periods for SPB patients and lower survival periods for MM patients. Copyright 2003 Wiley Periodicals, Inc.
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                Author and article information

                Journal
                24353648
                3809276
                10.12669/pjms.293.3406

                Radiology,Mandible,Plasmacytoma
                Radiology, Mandible, Plasmacytoma

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