• Maxillofacial Plastic and Reconstructive Surgery
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• v.18 no.1
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• pp.109-114
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• 1996

Plasmacytoma is one of the malignant neoplasm that originate in immunoglobulin-producing plasma cell, and occurrence in gingiva is known to be rare. About 7% of all patients with plasma cell malignancies present with solitary lesions in bone or soft tissues. In 30% to 40% of patients, the disease progresses to mulitiple myeloma on long-term follow-up. the incidence of progression to multiple myeloma is higher in patients with a bone lesion as compared with an extramedullary lesion. Several studies have shown a relatively favorable course for both these groups of patients, but many long-term studies have demonstrated the distinct difference in ultimate prognosis between patients with solitary lesions in bone and those with extramedullary lesions. The primary objective in the past has been to suppress the immune system to permit allotransplantation. But immunosuppressant also increases the incidence of malignant neoplasms in patients after allograft transplantation. We treated a 15-year patient with plasmacytoma on gingiva who had received kindny transplantation & immunosuppressant therapy. We excised this lesion & performed radiotherapy and had a favorable result.

• Radiation Oncology Journal
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• v.3 no.1
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• pp.35-39
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• 1985

The details of 5 patients with exramedullary plasmacytoma of the head and neck were reviewed for the period from 1970 to 1984. All patients were presented with localized disease at the time of diagnosis. Out of 5 patients the one treated with surgery alone developed local recurrence and disseminated disease. He died at 3 years and 6 months. Rest of the four were alive with no evidence of the disease. Two patients were treated with radiation therapy alone while other two were treated with surgery and postoperative radiation therapy. Curative radiation therapy is recommanded after the diagnosis is established by biopsy examination.

• Journal of Veterinary Clinics
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• v.41 no.1
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• pp.18-23
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• 2024

A 13-year-old spayed female Golden Retriever with clinical signs of weight loss and lethargy presented with two esophageal masses and one sessile polyp on computed tomography and esophagoscopy. Endoscopic snare resection was performed, and histopathological examination was requested. Based on histopathology and immunohistochemistry of multiple myeloma oncogene 1 staining, the patient was diagnosed with esophageal extramedullary plasmacytoma. The patient remained clinically well without any clinical signs during a follow-up period of 12 months. Herein, we report the successful diagnosis and management of esophageal extramedullary plasmacytoma in a dog using endoscopy.

• Journal of Korean Neurosurgical Society
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• v.29 no.5
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• pp.701-705
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• 2000

Solitary plasmacytomas are rare and account for 5-10% of all plasma cell disorders. These tumors are categorized as solitary plasmacytomas of bone(osseous) or extramedullary plasmacytomas(non-osseous). About a half of solitary plasmacytomas of bone occur in the spine but rarely in the skull. We report a case of solitary plasmacytoma of the skull presented with a painless palpable left parietal calvarial mass in an otherwise asymptomatic 38- year-old man. Skull radiographs showed a large radiolucent lesion with well defined non-sclerotic margins. Computed tomograph scan demonstrated a markedly enhancing mass extending from the epidural to the subcutaneous space. The patient underwent surgery and tumor was completely excised. Pathological examination showed tumor to be a plasmacytoma synthesizing IgG. Postoperatively, the patient received radiotherapy. There was no evidence of systemic involvement on postoperative laboratory wokups. Our recommended treatment is a complete surgical excision combined with postoperative radiation therapy. The patient should be follwed carefully for more than 10 years because of either local recurrence or possible progression to multiple myeloma.

• Tuberculosis and Respiratory Diseases
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• v.78 no.3
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• pp.262-266
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• 2015

Plasmacytomas are extramedullary accumulations of plasma cells originating from soft tissue. Mediastinal plasmacytoma is a rare presentation. A 67-year-old man recovered after antibiotic treatment for community-acquired pneumonia. However, on convalescent chest radiography after 3 months, mass like lesion at the right lower lung field was newly detected. Follow-up chest computed tomography (CT) revealed an increase in the extent of the right posterior mediastinal mass that we had considered to be pneumonic consolidations on previous CT scans. Through percutaneous needle biopsy, we diagnosed IgG kappa type extramedullary plasmacytoma of the posterior mediastinum.

• Journal of Yeungnam Medical Science
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• v.31 no.1
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• pp.43-47
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• 2014

Extramedullary plasmacytoma (EMP) is a rare disease that occurs in 3% to 5% of patients with plasma cell disorder. It occurs most commonly in the upper respiratory tract and the oral cavity. Very few EMP cases have been reported in the central nervous system (CNS). We report herein an unusual case of EMP in the nasal cavity that recurred in the CNS without systemic involvement. A 67-year-old man visited our hospital due to a month-long bout with exophthalmos. He was diagnosed with EMP in the nasal cavity, paranasal sinus, and orbital cavity. He received radiotherapy to which he had complete responses. After 2 years, he visited our hospital because of a month-long headache. He was diagnosed with EMP recurrence in the CNS via brain magnetic resonance imaging and cerebrospinal fluid analysis. He was treated with whole brain radiotherapy and intrathecal chemotherapy with methotrexate, but he expired due to pneumonia.

• The Korean Journal of Cytopathology
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• v.10 no.1
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• pp.67-71
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• 1999

We report a case of 53-year-old man with plasmacytold transitional cell carcinoma of the urinary bladder, which may be confused with plasmacytoma. The patient initially presented with gross hematuria and dysuria for two months. Cystoscopy and radiologic studios revealed multiple intraluminal protruding masses on the urinary bladder invading perivesical fat tissue. After urinary cytologic examination and cystoscopic biopsy, radical cystectomy and pelvic lymph node dissections were done. Urine cytology showed single cells and poorly cohesive cells with round eccentric nuclei, bi-or multi-nucleation, indistinct nucleoli, coarse chromatin, and abundant basophilic cytoplasm within relatively clear background. The cytologic findings of tumor cells were similar to the plasma cells seen in plasmacytoma. The tumor of the bladder was composed on discohesive, individual cancer cells with diffuse pattern that simulated lymphoma or plasmacytoma. Immunohistochemical and electron microscopic studies clearly established the epithelial nature of the neoplasm. Recognition of this plasmacytoid type of transitional cell carcinoma of the urinary bladder can avoid the misdiagnosis.

• Journal of Periodontal and Implant Science
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• v.9 no.1
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• pp.33.2-33.2
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• 1979

• Nuclear Medicine and Molecular Imaging
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• v.43 no.6
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• pp.509-512
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• 2009

This review focuses on the clinical use of $^{18}F$-FDG PET to evaluate multiple myeloma. $^{18}F$-FDG PET is useful for diagnosis, staging of multiple myeloma and differential diagnosis of myeloma related disease such as monoclonal gammopathy of undetermined significance or plasmacytoma. For therapy response, $^{18}F$-FDG PET may be effective after chemotherapy for multiple myeloma and radiotherapy for plasmacytoma.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2009.04a
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• pp.297-297
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• 2009