ĐẶC ĐIỂM HÌNH ẢNH CẮT LỚP VI TÍNH LYMPHOMA NGUYÊN PHÁT ỐNG TIÊU HÓA

Abstract

Objective: To describe the imaging characteristics of primary gastrointestinal (GI) lymphoma on computed tomography (CT). Methods: A retrospective descriptive case series was conducted on all patients diagnosed with primary GI lymphoma confirmed by histopathological results from endoscopic biopsy or postoperative specimens at Ho Chi Minh City Oncology Hospital. Results: From January 2019 to September 2025, a total of 54 cases of primary GI lymphoma were identified, including 31 males (57.4%) and 23 females (42.6%), with a mean age of 54.6 ± 13.4 years. On CT, the most common site of involvement was the stomach (33 cases, 61.1%). The predominant morphological pattern was asymmetric wall thickening (68.5%), and only 6 cases (11.1%) showed luminal narrowing. Most lesions demonstrated strong (75.9%) and homogeneous (94.4%) enhancement, with perilesional fat infiltration observed in 11.1% of cases. The mean tumor wall thickness and length were 23.7 ± 12.0 mm and 79.0 ± 31.2 mm, respectively. Lymph node involvement was present in 53 of 54 cases, with a mean nodal diameter of 18.6 ± 11.7 mm (range: 5–56 mm). The majority of lymph nodes showed strong (75.5%) and homogeneous (94.35%) enhancement, predominantly with a diffuse distribution pattern (94.3%). Conclusion: CT imaging features play an important role in suggesting the diagnosis of primary GI lymphoma and distinguishing it from other etiologies, thereby assisting clinicians in early diagnosis and treatment planning.