• Korean Journal of Head & Neck Oncology
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• v.33 no.2
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• pp.63-66
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• 2017

The tumor in accessory parotid gland (APG) is rarely occurred and its incidence is about 7.7% of all parotid gland neoplasms, but has a higher frequency of malignancy than major salivary glands. The mucoepidermoid carcinoma is the most common malignancy in APG, while B-cell lymphoma is less than 2%. It is often appeared as superficial mass in mid-cheek area. This lesion requires differential diagnosis with epidermoid cyst, lipoma, neurogenic tumors, Stensen's duct stone, lymphadenopathy and hemangioma etc. The mucosa associated lymphoid tissue (MALT) lymphoma, which is also termed extra-nodal marginal zone B-cell lymphoma tends to be localized disease for long time and has a relatively indolent course. We recently encountered a 69-year-old man with superficial solitary mass on the right cheek area that finally diagnosed as MALT lymphoma in APG. We report the rare and unique case with brief literature review.

• Archives of Craniofacial Surgery
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• v.20 no.1
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• pp.66-70
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• 2019

Mucosa-associated lymphoid tissue (MALT) lymphoma is an uncommon form of non-Hodgkin lymphoma involving the mucosa-associated lymphoid tissue. Most commonly affected organ is the stomach. But, it could affect almost every organ in the whole body. If they have suspicious lesion, excision biopsy could be made. For staging, blood test including blood smear, abdomen and chest tomography or scan will be checked. Also, bone marrow test can be done if it is needed. The patient had visited the clinic for palpable mass on right lower eyelid. With excisional biopsy, it was diagnosed as lymphoid hyperplasia on pathologic test. But 2 years later, the patient came with recurrent symptom for our department with worry. At that time, we recommended excisional soft tissue biopsy under general anesthesia. Unfortunately, it was revealed MALT lymphoma on pathologic finding. It turned out to be stage 3 in Ann Arbor staging system without B symptoms. Hematologic consultation was made and she was treated with adjuvant chemotherapy for eight cycles to complete remission. We report a case of MALT lymphoma on subcutaneous tissue at right lower eyelid previously diagnosed as lymphoid hyperplasia.

• Journal of Gastric Cancer
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• v.1 no.1
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• pp.60-63
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• 2001

Purpose: The aim of this study was to analyze the clinical and the histopathological characteristics of mucosa associated lymphoid tissue (MALT) lymphomas in the stomach. Materials and Methods: We retrospectively reviewed the medical records of 22 patients who had been treated at Samsung Medical Center from Jan. 1995 to Sep. 2000 and who had been pathologically proven to have a MALT lymphoma. The factors we analyzed were operative procedure, tumor stage, and histopathological characteristics. Results: Of 3658 patients with a gastric malignancy, 22 patients proved to have a MALT lymphoma ($0.6\%$). There were 7 men and 15 women whose ages ranged from 25 years to 70 years (mean, 48.8 years). Forteen cases were located in the antrum, 4 ($18\%$) in the body and 4 ($18\%$) in the fundus or the high body. Nineteen of these patients were managed with total gastrectomy and splenectomy and 3 with radical subtotal gastrectomy. Histopathologically the tumor was limited to the mucosa in 3 patients ($1.36\%$), to the submucosa in 13 ($59.1\%$) and extended to the muscularis propria in 6 ($27.3\%$). Lymph node involvement was seen in 12 patients ($54.6\%$). There was no splenic or hepatic involvement. Bone marrow involvement was not seen in any patients. H. pylori was identified in 11 patients (50$\%$). During the mean follow-up period of 32.7 months, there were no reports of tumor recurrence or death. Conclusion: MALT lymphomas rarely disseminate by the time of diagnosis and rarely involve the bone marrow. Lymph node involvement is relatively high and a total gastrectomy is effective in managing patients with a MALT lymphoma.

• Investigative Magnetic Resonance Imaging
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• v.25 no.2
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• pp.129-134
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• 2021

The prevalence of cheek lymphoma, especially a mucosa-associated lymphoid tissue lymphoma (MALT), is very rare. Non-specific symptoms and image findings of cheek lymphoma may mimic benign entities and make it difficult to diagnose. In this case report, we present a case of MALT lymphoma of the cheek mimicking benign entities on computed tomography and magnetic resonance imaging.

• BLOOD RESEARCH
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• v.53 no.4
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• pp.329-332
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• 2018

• Imaging Science in Dentistry
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• v.30 no.2
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• pp.144-148
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• 2000

Sjogren's syndrome is a chronic inflammatory disease that predominantly affects salivary, lacrimal and other exocrine glands. We report a case of Sjogren's syndrome combined with MALT (mucose associated lymphoid tissue) lymphoma which occured in the parotid gland. A 57-year-old female with the complaint of painful swelling and lymph node enlargement was referred to our department. Sialograms of both parotid glands showed globular collections of contrast material uniformly distributed throughout the parotid gland. Salivary scintigraphy showed decreased uptake of the parotid gland. CT scan showed larger, slightly more dense parotid gland than normal and honeycomb glandular appearance. Also, It showed discrete, slightly more enhanced round mass in the left parotid gland. Histopathological finding showed replacement of salivary gland parenchyma with dense small lymphocytic infiltration having the feature of epimyoepithelial islands. Kappa light chain restriction of interglandular plasma cell could be seen.

• Radiation Oncology Journal
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• v.31 no.4
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• pp.177-184
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• 2013

Purpose: The aim of this study was to analyze the patterns of care and treatment outcomes in patients with primary thyroid lymphoma (PTL) in a single institution. Materials and Methods: Medical records of 29 patients with PTL treated between April 1994 and February 2012 were retrospectively reviewed. Diagnosis was confirmed by biopsy (n = 17) or thyroidectomy (n = 12). Treatment modality and outcome were analyzed according to lymphoma grade. Results: The median follow-up was 43.2 months (range, 3.8 to 220.8 months). The median age at diagnosis was 57 years (range, 21 to 83 years) and 24 (82.8%) patients were female. Twenty-five (86.2%) patients had PTL with stage IEA and IIEA. There were 8 (27.6%) patients with mucosa-associated lymphoid tissue (MALT) lymphoma and the remaining patients had high-grade lymphoma. Patients were treated with surgery (n = 2), chemotherapy (n = 7), radiotherapy (n = 3) alone, or a combination of these methods (n = 17). Treatment modalities evolved over time and a combination of modalities was preferred, especially for the treatment of high-grade lymphoma in recent years. There was no death or relapse among MALT lymphoma patients. Among high-grade lymphoma patients, 5-year overall survival (OS) and 5-year progression-free survival (PFS) were 75.6% and 73.9%, respectively. Complete remission after initial treatment was the only significant prognostic factor for OS (p = 0.037) and PFS (p = 0.003). Conclusion: Patients with PTL showed a favorable outcome, especially with MALT lymphoma. Radiotherapy alone for MALT lymphoma and chemotherapy followed by radiotherapy for high-grade lymphoma can be effective treatment options for PTL.

• Korean Journal of Head & Neck Oncology
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• v.39 no.1
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• pp.33-36
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• 2023

Malignant lymphoma rarely occurs in the larynx and hypopharynx. Few cases of malignant lymphoma in the larynx were reported in Korea. However, malignant lymphoma in the hypopharynx had been not reported in Korea. A 68-year-old woman came to the outpatient clinic with a foreign body sensation in her throat. A round, smooth margin, bright pink-colored mass was confirmed by the laryngoscopy. The patient took neck computer tomography. A small bulging of mucosa was observed, but there was no peripheral infiltration or abnormally enlarged lymph nodes. We did excision using CO2 LASER. She was finally diagnosed with mucosa-associated lymphoid tissue lymphoma (MALT lymphoma). After diagnosis, several image studies confirmed that there was no metastatic lesion. She got only radiotherapy after that and kept a complete response state for over 2 years.

• 대한위암학회:학술대회논문집
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• 2002.04a
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• pp.18-23
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• 2002

• Journal of Chest Surgery
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• v.35 no.7
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• pp.564-567
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• 2002

Primary malignant lymphoma of the lung is a very rare disease, which consists of 0.34% of entire malignant lymphoma. The majority are low-grade B-cell tumors, and because of their morphological peculiarities and overall excellent prognosis, many cases, like many other extranodal lymphomas, have been mislabelled as "pseudolymphomas" in the past. For these reasons their true incidence is difficult to estimate. An incidentally discovered mass in the right middle lobe of a 36-year-old woman was operated on November 9, 2001 at Hanyang University Hospital. A right upper lobectomy was done and the pathologic diagnosis of extranodal marginal zone B-cell lymphoma of MALT type was made.