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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
    • 1,548 views
  2. 63 year old male with lesion on finger
    • 10 comments
    • 1,638 views
  3. 51 year old female with lesion on left knee. Image 4=MITF; Image 5=p16; Image 6=Ki67
    • 4 comments
    • 1,233 views
  4. 2 year old male with erythematous plaques; biopsy from axilla. R/o urticaria pigmentosa
    • 11 comments
    • 1,693 views
  5. F60. Bridge of nose. 1 year. Bleeds. ?fibrous papule, r/o BCC
    • 8 comments
    • 1,980 views
  6. F80. Lower lid. ?Sebaceous cyst, ?Naevus, ?Seborrhoeic keratosis
    • 12 comments
    • 2,179 views
  7. M85. Lower leg. Keratotic nodule. r/o SCC
    • 9 comments
    • 1,853 views
  8. M15. Known ALL. Rash 6/12. Treated as scabies. Widespread papules all over including genital area
    • 6 comments
    • 1,626 views
  9. F5. Melanonychia. ?Melanoma. Nail plate and nail bed biopsy
    • 9 comments
    • 1,664 views
  10. 28y F, painful nodule
    • 6 comments
    • 1,429 views
  11. 68F with foot nodule. Previous history of thymoma
    • 5 comments
    • 1,236 views
  12. Spot Diagnosis
    • 11 comments
    • 2,164 views
  13. M47. Biopsy right cheek
    • 10 comments
    • 1,728 views
  14. F48 biopsy left cheek. ?Granulomatous ?Cause
    • 8 comments
    • 1,132 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
    • 1,584 views
  16. 77 year-old female with a lesion on the tragus. (Courtesy of Dr. Amanda Moyer)
    • 5 comments
    • 1,326 views
  17. 59 year old female with elbow lesion (courtesy of Dr Amanda Moyer)
    • 6 comments
    • 1,328 views
  18. F68, right leg
    • 5 comments
    • 1,354 views
  19. 68, scrotum
    • 6 comments
    • 1,410 views
  20. F13, right calf
    • 6 comments
    • 1,344 views
  21. M57, nasal root
    • 6 comments
    • 1,454 views
  22. 76 year-old male with pedunculated lesion on abdomen. Clinical impression: tag versus acrochordon. (Courtesy of Dr. Amanda Moyer)
    • 10 comments
    • 1,775 views
  23. 59 year old female with left second toe lesion. (Courtesy of Dr. Amanda Moyer)
    • 4 comments
    • 1,274 views
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