Primary hepatic mucosa-associated lymphoid tissue lymphoma with HP and previous HBV infection: A case report and literature review

Rare incidence of mucosa-associated lymphoid tissue lymphoma presenting as buccal fat pad tumor: A case report

BACKGROUND

Mucosa-associated lymphoid tissue (MALT) lymphoma, a type of non-Hodgkin lymphoma, originates in the mucosal lining of body organs and internal cavities, including the nose, mouth, lungs, and digestive tract. The lymphoma develops when the body produces abnormal B lymphocytes. These lymphomas develop at the edge of the lymphoid tissue, called the marginal zone, and, hence, are classified as a type of marginal zone lymphomas. They are the most common type of marginal zone lymphomas although their occurrence is rare. To date, no previous cases of MALT lymphoma in the buccal fat pad have been reported.

CASE SUMMARY

We report the case of a patient who presented with a mass on the frontal cheek. Magnetic resonance imaging revealed a tumor in the buccal fat pad, and histopathological and immunohistochemical findings confirmed the diagnosis of MALT lymphoma. The patient had a history of Helicobacter pylori and hepatitis C virus infection, suggesting an association between these infective agents and MALT lymphoma.

CONCLUSION

Consideration of MALT lymphoma is essential in the differential diagnosis of frontal cheek masses.

Primary hepatic mucosa-associated lymphoid tissue lymphoma: a case report and literature review

Objective

To investigate the pathogenesis, clinical manifestations, imaging and pathological features, and treatment methods of primary hepatic lymphoma (PHL).

Case presentation

A 61-year-old male with a history of hepatitis B virus (HBV) infection presented to the hospital complaining of abdominal pain. Preoperative abdominal computed tomography (CT) revealed a mass in the right lobe of the liver, accompanied by an elevated alpha-fetoprotein (AFP) level. Consequently, hepatocellular carcinoma (HCC) was initially suspected. Following a comprehensive multidisciplinary consultation, the patient underwent an anatomical hepatectomy. Histopathological examination post-surgery confirmed the diagnosis of primary hepatic mucosa-associated lymphoid tissue (MALT) lymphoma. The patient received chemotherapy as an adjunct to surgical treatment. During the five-year follow-up period, there was no evidence of tumor recurrence.

Conclusion

Primary hepatic MALT lymphoma is infrequently encountered in clinical practice. Its clinical and radiological presentations are often nonspecific, making the pathological evaluation the definitive diagnostic tool. Surgical resection, in conjunction with chemotherapy, remains the cornerstone of management for this condition. The prognosis for most patients is favorable.

A Case of Primary Hepatic Mucosa-Associated Lymphoid Tissue Lymphoma in a Patient With Primary Biliary Cholangitis and Hashimoto's Thyroiditis

Mucosa-associated lymphoid tissue (MALT) lymphoma is a low-grade malignant lymphoproliferative disease, representing a low percentage of newly diagnosed lymphoma cases. Although its exact cause is still unclear, it is commonly associated with infections or autoimmune diseases. The stomach is the most frequent site for MALT lymphoma, with primary hepatic MALT lymphoma being exceptionally rare. Cases of primary hepatic MALT lymphoma often coincide with viral hepatitis. In this report, we present a case of primary hepatic MALT lymphoma in a patient with no history of hepatitis but complicated by primary biliary cholangitis (PBC) and Hashimoto's thyroiditis.

Primary hepatic extranodal marginal zone B-cell mucosa-associated lymphoid tissue lymphoma treated by laparoscopic partial hepatectomy: a case report

BACKGROUND

Primary hepatic extranodal marginal zone B-cell mucosa-associated lymphoid tissue (MALT) lymphoma is very rare, so it is difficult to diagnose preoperatively. And there is no established treatment for hepatic MALT lymphoma. We report herein a case of primary hepatic MALT lymphoma treated by laparoscopic partial hepatectomy, and discuss the usefulness of laparoscopic hepatectomy for a rare liver tumor.

CASE PRESENTATION

This patient was a woman in her 60s, who was diagnosed preoperatively as having synchronous liver metastasis from sigmoid colon cancer; therefore, laparoscopic partial hepatectomy was performed. She had a good course after the operation and was discharged on postoperative day 12. However, she was diagnosed pathologically as having primary hepatic MALT lymphoma. A bone marrow biopsy was also performed, and then she was finally diagnosed as having limited-stage primary hepatic MALT lymphoma. She received no postoperative treatment and showed no recurrence for 4 years postoperatively.

CONCLUSIONS

We experienced the good result of the patient with limited-stage primary MALT lymphoma treated by laparoscopic partial hepatectomy. Liver tumors are sometimes misdiagnosed by imaging examinations alone. Laparoscopic hepatectomy has been widespread recently as a minimally invasive procedure, and it may be useful for both diagnosis and treatment.