Low attenuation lymphadenopathy refers to abnormal lymph nodes that on CT appear to have lower attenuation than other soft tissues. This category can be split into two types:
-
cystic (necrotic) lymph nodes
- metastatic carcinoma (or lymphoma)
- infection (tuberculous or fungal)
- inflammatory necrotic disorders (e.g. Kikuchi-Fujimoto disease)
- cavitating mesenteric lymph node syndrome related to celiac disease (may contain fluid or fat 3)
- lymphangioleiomyomatosis
- fat-containing lymph nodes
- Whipple disease
- extra-adrenal myelolipoma
- lipoplastic lymphadenopathy
- cavitating mesenteric lymph node syndrome related to celiac disease (may contain fluid or fat 3)