Primary Pancreatic Liposarcoma: An Unexpected Cause of a Pancreatic Mass.

Liposarcoma is the most common type of soft-tissue sarcoma and typically occurs in the extremities or retroperitoneum. Primary liposarcoma of the pancreas is exceedingly rare, with only 10 cases reported since 1979. We present a patient who was incidentally discovered to have a pancreatic mass on imaging, which was ultimately diagnosed as dedifferentiated pancreatic liposarcoma. We review the clinical and histologic features of pancreatic liposarcoma in this case and in the 10 previously reported cases to increase awareness and knowledge of this rare disease.

A Solitary Sigmoid Perineurioma in an Otherwise Healthy 30-Year-Old Male.

Colorectal perineuriomas are rare benign fibroblastic polyps of the colon found on colonoscopy and usually present as a sessile polyp distal to the splenic flexure. We report a case of sessile sigmoid perineurioma in a young healthy male. He presented with chronic constipation and underwent colonoscopy, which showed a 3-4 mm sessile polyp in the sigmoid colon. Biopsy results were significant for a perineurioma. These polyps are peripheral nerve sheath tumors composed of bland spindle cells with ovoid nuclei in a whorling appearance. The differential diagnosis of these nerve sheath tumors includes ganglioneuromas, schwannomas, neuromas, neurofibroma, or Schwann cell hamartomas, and gastrointestinal stromal tumor (GIST). While these polyps are regarded as benign, it is prudent to rule out other tumors that have malignant potential.

The Relationship Between Number of Comorbidities and Age of Colorectal Cancer Diagnosis in US Male Veteran Population: A Single-Center Experience.

BACKGROUND: Comorbidities of tobacco and alcohol abuse and obesity are major risk factors for colon carcinogenesis. These risk factors are considered the most prevalent modifiable risk factors linked to malignancies including colorectal cancer (CRC) in both high- and low-income countries. The aim of this study was to investigate the relationship between number of comorbidities and age of CRC diagnosis in US male veteran population. METHODS: A retrospective single-center study using chart review and the International Classification of Diseases, Ninth Revision (ICD-9) codes to identify patients with a diagnosis of CRC and comorbidities of tobacco abuse, alcohol abuse, hypertension (HTN), diabetes mellitus (DM) and chronic kidney disease (CKD). The primary aim was to study effect of these comorbidities on age of CRC diagnosis. Univariable and then multivariable logistic regression models were fit to age at diagnosis for each patient variable. RESULTS: A total of 362 patients were included in the study. The mean age of CRC diagnosis was 66.8. Eighty percent were Caucasians, and 20% were African Americans. African Americans were diagnosed with CRC 3.8 years younger compared to Caucasians (P = 0.01). Controlling for other variables in the multivariable model, age at CRC diagnosis was significantly lower for African Americans and for patients with higher total counts for tobacco and alcohol abuse and obesity. HTN, DM and CKD were not associated with a lower age of CRC diagnosis. CONCLUSIONS: Tobacco and alcohol abuse and obesity have negative cumulative effect on age of CRC diagnosis in US male veteran population. Patients with increasing number of these comorbidities are associated with significantly lower age of CRC diagnosis. It is important to identify veterans with these comorbidities and encourage CRC screening.

Validation of Risk Score in Predicting Early Readmissions in Decompensated Cirrhotic Patients: A Model Based on the Administrative Database.

Early readmission in patients with decompensated liver cirrhosis leads to an enormous burden on health care use. A retrospective cohort study using the 2013 and 2014 Nationwide Readmission Database (NRD) was conducted. Patients with a diagnoses of cirrhosis and at least one feature of decompensation were included. The primary outcome was to develop a validated risk model for early readmission. Secondary outcomes were to study the 30-day all-cause readmission rate and the most common reasons for readmission. A multivariable logistic regression model was fit to identify predictors of readmissions. Finally, a risk model, the Mumtaz readmission risk score, was developed for prediction of 30-day readmission based on the 2013 NRD and validated on the 2014 NRD. A total of 123,011 patients were included. The 30-day readmission rate was 27%, with 79.6% of patients readmitted with liver-related diagnoses. Age <65 years; Medicare or Medicaid insurance; nonalcoholic etiology of cirrhosis; ≥3 Elixhauser score; presence of hepatic encephalopathy, ascites, variceal bleeding, hepatocellular carcinoma, paracentesis, or hemodialysis; and discharge against medical advice were independent predictors of 30-day readmission. This validated model enabled patients with decompensated cirrhosis to be stratified into groups with low (<20%), medium, (20%-30%), and high (>30%) risk of 30-day readmissions. Conclusion: One third of patients with decompensated cirrhosis are readmitted within 30 days of discharge. The use of a simple risk scoring model with high generalizability, based on demographics, clinical features, and interventions, can bring refinement to the prediction of 30-day readmission in high-risk patients; the Mumtaz readmission risk score highlights the need for targeted interventions in order to decrease rates of readmission within this population.