Dados do Trabalho

Título

Unusual Faces of Abdominal Lymphomas

Introdução e objetivo(s)

Extranodal lymphomas account for approximately 30–40% of all non-Hodgkin lymphomas (NHL), with the abdomen being a frequent site of involvement. Due to its variable presentation, imaging plays a crucial role in the detection, characterization, staging, and follow-up of these malignancies. This pictorial review aims to highlight the radiologic features of extranodal abdominal lymphoma, focusing on computed tomography (CT) and magnetic resonance imaging (MRI), while emphasizing their role in differential diagnosis. We will present rare cases of extranodal abdominal lymphoma and provide an educational summary of key radiologic aspects to enhance awareness and diagnostic accuracy.

Método(s)

A comprehensive review of the radiologic presentation of lymphomas will be conducted, covering their typical imaging features on CT, MRI, and ultrasound (US). Additionally, an overview of abdominal nodal stations will be provided. Differential diagnoses and common pitfalls will be discussed to enhance diagnostic precision. A range of classic and rare cases of extranodal abdominal lymphoma will be explored, including involvement of the testicles, liver, pancreas, adrenal glands, kidneys, peritoneum, ovaries, stomach, and colon.

Discussão

Understanding abdominal lymph node stations is essential when lymphoma is suspected. Enlarged lymph nodes can have both benign and malignant causes, necessitating careful assessment. Primary lymphomas often present with nonspecific imaging findings, making recognition of disease-specific patterns critical. CT and MRI play key roles in disease evaluation, management, response assessment, and staging. CT remains the primary modality for initial assessment due to its accessibility and rapid image acquisition. MRI enhances lesion characterization, particularly in solid organ involvement. In selected cases, PET-CT provides additional functional information for staging and treatment response evaluation. Despite these advances, a definitive diagnosis requires histopathologic confirmation via biopsy.

Conclusões

Radiologic imaging is pivotal in the detection and management of extranodal abdominal lymphoma. Recognizing the imaging features of extranodal abdominal lymphoma is essential for accurate diagnosis and differentiation from other malignancies, ultimately leading to improved patient outcomes.

Palavras Chave

linfoma extranodal; LINFOMA; ONCOLOGIA

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