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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
    • 1,789 views
  2. Spot Diagnosis
    • 11 comments
    • 2,193 views
  3. F5. Melanonychia. ?Melanoma. Nail plate and nail bed biopsy
    • 9 comments
    • 1,692 views
  4. M57, nasal root
    • 6 comments
    • 1,475 views
  5. 2 year old male with erythematous plaques; biopsy from axilla. R/o urticaria pigmentosa
    • 11 comments
    • 1,725 views
  6. 59 year old female with elbow lesion (courtesy of Dr Amanda Moyer)
    • 6 comments
    • 1,349 views
  7. 68F with foot nodule. Previous history of thymoma
    • 5 comments
    • 1,258 views
  8. M15. Known ALL. Rash 6/12. Treated as scabies. Widespread papules all over including genital area
    • 6 comments
    • 1,649 views
  9. F13, right calf
    • 6 comments
    • 1,366 views
  10. 51 year old female with lesion on left knee. Image 4=MITF; Image 5=p16; Image 6=Ki67
    • 4 comments
    • 1,255 views
  11. 59 year old female with left second toe lesion. (Courtesy of Dr. Amanda Moyer)
    • 4 comments
    • 1,288 views
  12. 28y F, painful nodule
    • 6 comments
    • 1,455 views
  13. M85. Lower leg. Keratotic nodule. r/o SCC
    • 9 comments
    • 1,882 views
  14. 68, scrotum
    • 6 comments
    • 1,434 views
  15. 63 year old male with lesion on finger
    • 10 comments
    • 1,664 views
  16. 77 year-old female with a lesion on the tragus. (Courtesy of Dr. Amanda Moyer)
    • 5 comments
    • 1,350 views
  17. M47. Biopsy right cheek
    • 10 comments
    • 1,753 views
  18. F80. Lower lid. ?Sebaceous cyst, ?Naevus, ?Seborrhoeic keratosis
    • 12 comments
    • 2,209 views
  19. F68, right leg
    • 5 comments
    • 1,376 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
    • 1,580 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
    • 1,607 views
  22. F48 biopsy left cheek. ?Granulomatous ?Cause
    • 8 comments
    • 1,153 views
  23. F60. Bridge of nose. 1 year. Bleeds. ?fibrous papule, r/o BCC
    • 8 comments
    • 2,008 views
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