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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. 76 year-old male with pedunculated lesion on abdomen. Clinical impression: tag versus acrochordon. (Courtesy of Dr. Amanda Moyer)
    • 10 comments
    • 1,891 views
  2. Spot Diagnosis
    • 11 comments
    • 2,291 views
  3. F5. Melanonychia. ?Melanoma. Nail plate and nail bed biopsy
    • 9 comments
    • 1,795 views
  4. M57, nasal root
    • 6 comments
    • 1,543 views
  5. 2 year old male with erythematous plaques; biopsy from axilla. R/o urticaria pigmentosa
    • 11 comments
    • 1,802 views
  6. 59 year old female with elbow lesion (courtesy of Dr Amanda Moyer)
    • 6 comments
    • 1,417 views
  7. 68F with foot nodule. Previous history of thymoma
    • 5 comments
    • 1,332 views
  8. M15. Known ALL. Rash 6/12. Treated as scabies. Widespread papules all over including genital area
    • 6 comments
    • 1,748 views
  9. F13, right calf
    • 6 comments
    • 1,439 views
  10. 51 year old female with lesion on left knee. Image 4=MITF; Image 5=p16; Image 6=Ki67
    • 4 comments
    • 1,317 views
  11. 59 year old female with left second toe lesion. (Courtesy of Dr. Amanda Moyer)
    • 4 comments
    • 1,367 views
  12. 28y F, painful nodule
    • 6 comments
    • 1,524 views
  13. M85. Lower leg. Keratotic nodule. r/o SCC
    • 9 comments
    • 1,992 views
  14. 68, scrotum
    • 6 comments
    • 1,512 views
  15. 63 year old male with lesion on finger
    • 10 comments
    • 1,739 views
  16. 77 year-old female with a lesion on the tragus. (Courtesy of Dr. Amanda Moyer)
    • 5 comments
    • 1,437 views
  17. M47. Biopsy right cheek
    • 10 comments
    • 1,829 views
  18. F80. Lower lid. ?Sebaceous cyst, ?Naevus, ?Seborrhoeic keratosis
    • 12 comments
    • 2,283 views
  19. F68, right leg
    • 5 comments
    • 1,443 views
  20. 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
    • 1,708 views
  21. 50 year-old HIV positive male with failure to thrive for 3 months. He has a diffuse desquamating rash and edema
    • 8 comments
    • 1,693 views
  22. F48 biopsy left cheek. ?Granulomatous ?Cause
    • 8 comments
    • 1,228 views
  23. F60. Bridge of nose. 1 year. Bleeds. ?fibrous papule, r/o BCC
    • 8 comments
    • 2,098 views
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