Simultaneous splenic and colonic metastases from gastric cancer: different FDG avidities according to the density of cancer cells imaged on FDG PET/CT

Solitary Accessory Spleen-Like Metastasis Coexisted With Splenic Infarction Reveled on 18F-FDG PET/CT in a Hepatocellular Carcinoma Patient

ABSTRACT

Solitary parasplenic metastatic carcinoma may be misinterpreted as accessory spleen on CT images. In addition, elevated FDG uptake in the spleen may also mimic metastasis in patient with a history of carcinoma. Here we present a case of parasplenic metastasis coexisted with splenic infarction reveled on 18F-FDG PET/CT in a 51-year-old man with history of hepatocellular carcinoma.

Colonic Metastasis From Esophageal Squamous Cell Carcinoma Demonstrated With 18F-FDG PET/CT

Metastatic involvement of the colon is extremely rare. We report a 63-year-old man with colonic metastasis from esophageal squamous cell carcinoma. Whole-body F-FDG PET/CT showed abnormal tracer uptakes in the sigmoid colon, which was subsequently confirmed as metastatic from esophageal squamous cell carcinoma.

Focal splenic FDG uptake in a patient with Kala-Azar (visceral leishmaniasis)

We present a woman with a history of Gaucher disease and secondary portal hypertension. She went to hospital for treatment of resistant fever without apparent cause. A conventional study of fever of unknown origin did not show any pathology. For this reason, she was referred to our department for a PET/CT, which did not demonstrate a cause for the fever. Two months after, she was admitted again in hospital for fever recurrence. A new PET/CT showed FDG avid hypodense splenic lesions, suspicious for infection. Splenectomy was performed and histopathologic analysis demonstrated intracellular organisms compatible with Leishmania.

Application of liposomes in drug development--focus on gastroenterological targets

Over the past decade, liposomes became a focal point in developing drug delivery systems. New liposomes, with novel lipid molecules or conjugates, and new formulations opened possibilities for safely and efficiently treating many diseases including cancers. New types of liposomes can prolong circulation time or specifically deliver drugs to therapeutic targets. This article concentrates on current developments in liposome based drug delivery systems for treating diseases of the gastrointestinal tract. We will review different types and uses of liposomes in the development of therapeutics for gastrointestinal diseases including inflammatory bowel diseases and colorectal cancer.