EXPERT DDX. ABDOMEN AND PELVIS. 3RD EDITION

• SECTION 1: PERITONEUM AND MESENTERY GENERIC IMAGING PATTERNS
4 Mesenteric or Omental Mass (Solid)
10 Mesenteric or Omental Mass (Cystic)
14 Fat-Containing Lesion, Peritoneal Cavity
18 Mesenteric Lymphadenopathy
22 Abdominal Calcifications
28 Pneumoperitoneum
32 Hemoperitoneum
36 Misty (Infiltrated) Mesentery
MODALITY-SPECIFIC IMAGING FINDINGS COMPUTED TOMOGRAPHY
42 High-Attenuation (Hyperdense) Ascites
• SECTION 2: ABDOMINAL WALL ANATOMICALLY BASED DIFFERENTIALS
48 Abdominal Wall Mass
52 Mass in Iliopsoas Compartment
54 Groin Mass
58 Elevated or Deformed Hemidiaphragm
60 Defect in Abdominal Wall (Hernia)
• SECTION 3: ESOPHAGUS GENERIC IMAGING PATTERNS
66 Intraluminal Mass, Esophagus
68 Extrinsic Mass, Esophagus
72 Lesion at Pharyngoesophageal Junction
74 Esophageal Ulceration
76 Mucosal Nodularity, Esophagus
78 Esophageal Strictures
80 Dilated Esophagus
82 Esophageal Outpouchings (Diverticula)
84 Esophageal Dysmotility
CLINICALLY BASED DIFFERENTIALS
86 Odynophagia
• SECTION 4: STOMACH GENERIC IMAGING PATTERNS
90 Gastric Mass Lesions
96 Intramural Mass, Stomach
98 Target or Bull's-Eye Lesions, Stomach
100 Gastric Ulceration (Without Mass)
102 Intrathoracic Stomach
104 Thickened Gastric Folds
110 Gastric Dilation or Outlet Obstruction
114 Linitis Plastica, Limited Distensibility
CLINICALLY BASED DIFFERENTIALS
118 Epigastric Pain
124 Left Upper Quadrant Mass
• SECTION 5: DUODENUM GENERIC IMAGING PATTERNS
130 Duodenal Mass
136 Dilated Duodenum
138 Thickened Duodenal Folds
• SECTION 6: SMALL INTESTINE GENERIC IMAGING PATTERNS
142 Multiple Masses or Filling Defects, Small Bowel
144 Cluster of Dilated Small Bowel
146 Aneurysmal Dilation of Small Bowel Lumen
148 Stenosis, Terminal Ileum
150 Segmental or Diffuse Small Bowel Wall Thickening
156 Pneumatosis of Small Intestine or Colon
CLINICALLY BASED DIFFERENTIALS
160 Occult GI Bleeding
164 Small Bowel Obstruction
• SECTION 7: COLON GENERIC IMAGING PATTERNS
172 Solitary Colonic Filling Defect
174 Multiple Colonic Filling Defects
176 Mass or Inflammation of Ileocecal Area
182 Colonic Ileus or Dilation
186 Toxic Megacolon
188 Rectal or Colonic Fistula
194 Segmental Colonic Narrowing
198 Colonic Thumbprinting
200 Colonic Wall Thickening
206 Smooth Ahaustral Colon
CLINICALLY BASED DIFFERENTIALS
208 Acute Right Lower Quadrant Pain
214 Acute Left Lower Quadrant Pain
• SECTION 8: SPLEEN GENERIC IMAGING PATTERNS
222 Splenomegaly
226 Multiple Splenic Calcifications
228 Solid Splenic Mass or Masses
230 Cystic Splenic Mass
MODALITY-SPECIFIC IMAGING FINDINGS COMPUTED TOMOGRAPHY
232 Diffuse Increased Attenuation, Spleen
• SECTION 9: LIVER GENERIC IMAGING PATTERNS
236 Liver Mass With Central or Eccentric Scar
240 Focal Liver Lesion With Hemorrhage
244 Liver "Mass" With Capsular Retraction
246 Fat-Containing Liver Mass
248 Cystic Hepatic Mass
252 Focal Hypervascular Liver Lesion
258 Liver Mass With Mosaic Enhancement
262 Mosaic or Patchy Hepatogram
266 Hepatic Calcifications
270 Liver Lesion Containing Gas
274 Portal Venous Gas
276 Widened Hepatic Fissures
278 Dysmorphic Liver With Abnormal Bile Ducts
282 Focal Hyperperfusion Abnormality (THAD or THID)
MODALITY-SPECIFIC IMAGING FINDINGS MAGNETIC RESONANCE IMAGING
288 Multiple Hypodense Liver Lesions
294 Multiple Hypointense Liver Lesions (T2WI)
298 Hyperintense Liver Lesions (T1WI)
304 Liver Lesion With Capsule or Halo on MR
COMPUTED TOMOGRAPHY
308 Focal Hyperdense Hepatic Mass on Nonenhanced CT
312 Periportal Lucency or Edema
318 Widespread Low Attenuation Within Liver
ULTRASOUND
322 Focal Hepatic Echogenic Lesion ± Acoustic Shadowing
328 Hyperechoic Liver, Diffuse
330 Hepatomegaly
334 Diffuse Liver Disease
336 Cystic Liver Lesion
340 Hypoechoic Liver Mass
344 Echogenic Liver Mass
348 Target Lesions in Liver
350 Multiple Hepatic Masses
354 Hepatic Mass With Central Scar
356 Periportal Lesion
360 Irregular Hepatic Surface
362 Portal Vein Abnormality
• SECTION 10: GALLBLADDER GENERIC IMAGING PATTERNS
366 Distended Gallbladder
368 Gas in Bile Ducts or Gallbladder
372 Focal Gallbladder Wall Thickening
374 Diffuse Gallbladder Wall Thickening
MODALITY-SPECIFIC IMAGING FINDINGS
COMPUTED TOMOGRAPHY
378 High-Attenuation (Hyperdense) Bile in Gallbladder
ULTRASOUND
380 Hyperechoic Gallbladder Wall
382 Echogenic Material in Gallbladder
384 Dilated Gallbladder
388 Intrahepatic and Extrahepatic Duct Dilatation
CLINICALLY BASED DIFFERENTIALS
390 Right Upper Quadrant Pain
• SECTION 11: BILIARY TRACT GENERIC IMAGING PATTERNS
398 Dilated Common Bile Duct
404 Asymmetric Dilation of Intrahepatic Bile Ducts
408 Biliary Strictures, Multiple
MODALITY-SPECIFIC IMAGING FINDINGS
MAGNETIC RESONANCE IMAGING
412 Hypointense Lesion in Biliary Tree (MRCP)
• SECTION 12: PANCREAS GENERIC IMAGING PATTERNS
416 Hypovascular Pancreatic Mass
422 Hypervascular Pancreatic Mass
426 Cystic Pancreatic Mass
432 Atrophy or Fatty Replacement of Pancreas
434 Dilated Pancreatic Duct
438 Infiltration of Peripancreatic Fat Planes
444 Pancreatic Calcifications
MODALITY-SPECIFIC IMAGING FINDINGS
ULTRASOUND
448 Cystic Pancreatic Lesion
452 Solid Pancreatic Lesion
456 Pancreatic Duct Dilatation
• SECTION 13: RETROPERITONEUM GENERIC IMAGING PATTERNS
460 Retroperitoneal Mass, Cystic
466 Retroperitoneal Mass, Soft Tissue Density
472 Retroperitoneal Mass, Fat Containing
474 Retroperitoneal Hemorrhage
• SECTION 14: ADRENAL GENERIC IMAGING PATTERNS
478 Adrenal Mass
• SECTION 15: KIDNEY GENERIC IMAGING PATTERNS
486 Solid Renal Mass
490 Cystic Renal Mass
494 Bilateral Renal Cysts
498 Infiltrative Renal Lesions
502 Perirenal and Subcapsular Mass Lesions
506 Renal Cortical Nephrocalcinosis
508 Medullary Nephrocalcinosis
510 Perirenal Hemorrhage
514 Fat-Containing Renal Mass
518 Calcified Small Lesion in Kidney
522 Renal Sinus Lesion
528 Gas in or Around Kidney
530 Delayed or Persistent Nephrogram
534 Wedge-Shaped or Striated Nephrogram
MODALITY-SPECIFIC IMAGING FINDINGS
ULTRASOUND
538 Enlarged Kidney
542 Small Kidney
546 Hypoechoic Kidney
550 Hyperechoic Kidney
554 Renal Pseudotumor
556 Dilated Renal Pelvis
560 Hyperechoic Renal Mass
• SECTION 16: COLLECTING SYSTEM
568 Dilated Renal Calices
572 Radiolucent Filling Defect, Renal Pelvis
• SECTION 17: URETER GENERIC IMAGING PATTERNS
576 Ureteral Filling Defect or Stricture
580 Cystic Dilation of Distal Ureter
• SECTION 18: BLADDER GENERIC IMAGING PATTERNS
584 Filling Defect in Urinary Bladder
590 Urinary Bladder Outpouching
592 Gas Within Urinary Bladder
594 Abnormal Bladder Wall
• SECTION 19: URETHRA GENERIC IMAGING PATTERNS
600 Urethral Stricture
• SECTION 20: SCROTUM GENERIC IMAGING PATTERNS
604 Intratesticular Mass
608 Testicular Cystic Lesions
610 Extratesticular Cystic Mass
612 Extratesticular Solid Mass
614 Diffuse Testicular Enlargement
616 Decreased Testicular Size
618 Testicular Calcifications
• SECTION 21: PROSTATE AND SEMINAL VESICLES
GENERIC IMAGING PATTERNS
622 Focal Lesion in Prostate
626 Enlarged Prostate
• SECTION 22: FEMALE PELVIS GENERIC IMAGING PATTERNS
630 Pelvic Fluid
634 Female Lower Genital Cysts
640 Extra-Ovarian Adnexal Mass
CLINICALLY BASED DIFFERENTIALS
646 Acute Pelvic Pain in Non-Pregnant Women
• SECTION 23: UTERUS GENERIC IMAGING PATTERNS
654 Enlarged Uterus
658 Thickened Endometrium
CLINICALLY BASED DIFFERENTIALS
664 Abnormal Uterine Bleeding
• SECTION 24: OVARY GENERIC IMAGING PATTERNS
672 Multilocular Ovarian Cysts
678 Unilocular Ovarian Cysts
684 Solid Ovarian Masses
688 Calcified Ovarian Masses
MODALITY-SPECIFIC IMAGING FINDINGS
MAGNETIC RESONANCE IMAGING
692 Ovarian Lesions With Low T2 Signal Intensity

Highly practical and user-friendly, ExpertDDx: Abdomen and Pelvis, third edition, helps you reach accurate, clinically useful differential diagnoses in your everyday practice. It presents the most useful differential diagnoses for each region of the abdomen and pelvis, grouped according to anatomic location, generic imaging findings, modality-specific findings, or clinical-based indications. Each differential diagnosis includes several high-quality, succinctly annotated images; a list of diagnostic possibilities sorted as common, less common, and rare but important; and brief, bulleted text offering helpful diagnostic clues. It’s an excellent resource for subspecialty abdominal imagers as well as general radiologists and trainees, providing invaluable assistance in reaching logical, on-target differential diagnoses based on key imaging findings and clinical details.

Authors
• Atif Zaheer, MD, Dr. Atif Zaheer is Program Director, Cross-Sectional Imaging Fellowship, and Associate Professor of Radiology and Radiological Science at Johns Hopkins University School of Medicine in Baltimore.
• Siva P. Raman, MD, Dr. Raman is a board-certified radiologist in Walnut Creek, CA with a subspecialty focus on thoracoabdominal imaging.
• Bryan R. Foster, MD, Associate Professor, Department of Radiology, Oregon Health & Science University, Portland, Oregon.
• Ghaneh Fananapazir, MD, Ghaneh Fananapazir, MD is a professor, Department of Radiology, Mayo Clinic in Phoenix, AZ.