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Case of the Week 341

What's the most likely diagnosis?

  • 70 year-old female with headaches

  1. Paget disease
  2. Fibrous dysplasia
  3. Parietal thinning
  4. Sickle cell anemia
  5. Multiple myeloma

Additional Image - Lateral radiograph of the skull


Additional Image


Lateral radiograph of the skull




3. Parietal thinning



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Parietal Thinning

General Considerations

  • Variant seen in parietal bones in which there is thinning of the bones bilaterally
  • About 0.4% of normal skulls
  • More common in women
  • Mean age 72
  • Can be progressive
  • May be familial
  • No emissary vein is transmitted
  • Some consider it developmental, some secondary to osteoporosis and others a dysplasia
  • Stress produced by chewing has been implicated


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This Week

70 year-old female with headaches
Review some of the most common stable and unstable pelvic fractures as well as soft tissue injuries to the GU tract; part one of two parts; a mini-quiz is included
A trim mobile version for your PDA or internet-enabled smartphone with handy lists of differential diagnoses, most commons and more
Key points on recognizing the most common fractures and dislocations
Basic CT imaging of the brain focusing on the findings of cerebrovascular accidents
The top diagnostic imaging diagnoses that all medical students should recognize according to the Alliance of Medical Student Educators in Radiology
Recognizing normal and  key abnormal intestinal gas patterns, free air and abdominal calcifications
Some of the fundamentals of interpreting chest images
is an award-winning educational website aimed primarily at medical students and radiology residents-in-training, containing  lectures, handouts, images, Cases of the Week, archives of cases, quizzes, flashcards of differential diagnoses and “most commons” lists, primarily in the areas of chest, GI, GU cardiac, bone and neuroradiology.