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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.
Case are uploaded each week day by 10 am UK time with the correct diagnosis will generally be posted at 8 pm UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

May 2019

23 records in this category

  1. 66 year old female with new onset purpuric rash on upper thighs, fading over a day. Now with new purpuric rash on bilateral upper arms; also involving palms. Perivascular IgA is positive. What is your differential diagnosis?
    • 7 comments
    • 2,192 views
  2. 63 year old male with lesion on finger
    • 10 comments
    • 2,093 views
  3. 51 year old female with lesion on left knee. Image 4=MITF; Image 5=p16; Image 6=Ki67
    • 4 comments
    • 1,577 views
  4. 2 year old male with erythematous plaques; biopsy from axilla. R/o urticaria pigmentosa
    • 11 comments
    • 2,210 views
  5. F60. Bridge of nose. 1 year. Bleeds. ?fibrous papule, r/o BCC
    • 8 comments
    • 2,416 views
  6. F80. Lower lid. ?Sebaceous cyst, ?Naevus, ?Seborrhoeic keratosis
    • 12 comments
    • 2,653 views
  7. M85. Lower leg. Keratotic nodule. r/o SCC
    • 9 comments
    • 2,346 views
  8. M15. Known ALL. Rash 6/12. Treated as scabies. Widespread papules all over including genital area
    • 6 comments
    • 2,060 views
  9. F5. Melanonychia. ?Melanoma. Nail plate and nail bed biopsy
    • 9 comments
    • 2,091 views
  10. 28y F, painful nodule
    • 6 comments
    • 1,823 views
  11. 68F with foot nodule. Previous history of thymoma
    • 5 comments
    • 1,636 views
  12. Spot Diagnosis
    • 11 comments
    • 2,668 views
  13. M47. Biopsy right cheek
    • 10 comments
    • 2,129 views
  14. F48 biopsy left cheek. ?Granulomatous ?Cause
    • 8 comments
    • 1,550 views
  15. 50 year-old HIV positive male with failure to thrive for 3 months. He has a diffuse desquamating rash and edema
    • 8 comments
    • 1,987 views
  16. 77 year-old female with a lesion on the tragus. (Courtesy of Dr. Amanda Moyer)
    • 5 comments
    • 1,739 views
  17. 59 year old female with left second toe lesion. (Courtesy of Dr. Amanda Moyer)
    • 4 comments
    • 1,640 views
  18. 59 year old female with elbow lesion (courtesy of Dr Amanda Moyer)
    • 6 comments
    • 1,698 views
  19. F68, right leg
    • 5 comments
    • 1,724 views
  20. 68, scrotum
    • 6 comments
    • 1,831 views
  21. F13, right calf
    • 6 comments
    • 1,713 views
  22. M57, nasal root
    • 6 comments
    • 1,850 views
  23. 76 year-old male with pedunculated lesion on abdomen. Clinical impression: tag versus acrochordon. (Courtesy of Dr. Amanda Moyer)
    • 10 comments
    • 2,245 views
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