Abdominal mass DDx



Upper abdominal/ epigastric mass

  • retroperitoneal lymphadenopathy (e.g. lymphoma, teratoma)
  • Abdominal aoertic aneurysm (AAA)
  • gastric CA
  • pancreatic pseudocyst or tumour
  • pyloric stenosis
  • transverse colon CA
  • large recti
  • left lobe of liver

Right hypochondrium

  • hepatomegaly
  • enlarged gall bladder (empyema, mucocoele, common bile duct obstruction e.g. pancreatic cancer, gall bladder mass)
  • kidney mass
  • colon CA

Left hypochondrium

  • splenomegaly
  • kidney mass
  • pancreatic cancer
  • colon CA

Right iliac fossa mass

  • appendiceal abscess
  • cecal carcinoma
  • Crohn’s disease
  • pelvic kidney
  • ovarian tumour or cyst
  • carcinoid tumour
  • amoebiasis
  • psoas abscess
  • ileocecal tuberculosis
  • transplanted pelvic kidney
  • iliac lymphadenopathy

Left iliac fossa mass

  • feces (indentable) – loaded sigmoid
  • sigmoid or descending colon cancer
  • diverticular disease
  • ovarian tumour or cyst
  • psoas abscess
  • Crohn’s disease
  • transplanted pelvic kidney
  • iliac lymphadenopathy

Suprapubic mass

  • enlarged bladder
  • uterine mass e.g. fibroids
  • pregnant uterus
  • ovarian mass e.g. cyst

Inguinal mass

  • herniae (inguinal, femoral)
  • lymphadenopathy
  • vascular: saphena varix, aneurysm, pseudoaneurysm, hematoma
  • psoas abscess
  • ectopic or undescended testis
  • lipoma of the cord
  • hydrocoele of the cord

CCC 700 6

Critical Care


Chris is an Intensivist and ECMO specialist at the Alfred ICU in Melbourne. He is also a Clinical Adjunct Associate Professor at Monash University. He is a co-founder of the Australia and New Zealand Clinician Educator Network (ANZCEN) and is the Lead for the ANZCEN Clinician Educator Incubator programme. He is on the Board of Directors for the Intensive Care Foundation and is a First Part Examiner for the College of Intensive Care Medicine. He is an internationally recognised Clinician Educator with a passion for helping clinicians learn and for improving the clinical performance of individuals and collectives.

After finishing his medical degree at the University of Auckland, he continued post-graduate training in New Zealand as well as Australia’s Northern Territory, Perth and Melbourne. He has completed fellowship training in both intensive care medicine and emergency medicine, as well as post-graduate training in biochemistry, clinical toxicology, clinical epidemiology, and health professional education.

He is actively involved in in using translational simulation to improve patient care and the design of processes and systems at Alfred Health. He coordinates the Alfred ICU’s education and simulation programmes and runs the unit’s education website, INTENSIVE.  He created the ‘Critically Ill Airway’ course and teaches on numerous courses around the world. He is one of the founders of the FOAM movement (Free Open-Access Medical education) and is co-creator of litfl.com, the RAGE podcast, the Resuscitology course, and the SMACC conference.

His one great achievement is being the father of three amazing children.

On Twitter, he is @precordialthump.

| INTENSIVE | RAGE | Resuscitology | SMACC

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