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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
    • 1,565 views
  2. F60. Bridge of nose. 1 year. Bleeds. ?fibrous papule, r/o BCC
    • 8 comments
    • 1,994 views
  3. F48 biopsy left cheek. ?Granulomatous ?Cause
    • 8 comments
    • 1,148 views
  4. 50 year-old HIV positive male with failure to thrive for 3 months. He has a diffuse desquamating rash and edema
    • 8 comments
    • 1,598 views
  5. F68, right leg
    • 5 comments
    • 1,366 views
  6. F80. Lower lid. ?Sebaceous cyst, ?Naevus, ?Seborrhoeic keratosis
    • 12 comments
    • 2,195 views
  7. M47. Biopsy right cheek
    • 10 comments
    • 1,745 views
  8. 77 year-old female with a lesion on the tragus. (Courtesy of Dr. Amanda Moyer)
    • 5 comments
    • 1,339 views
  9. 63 year old male with lesion on finger
    • 10 comments
    • 1,655 views
  10. 68, scrotum
    • 6 comments
    • 1,425 views
  11. M85. Lower leg. Keratotic nodule. r/o SCC
    • 9 comments
    • 1,871 views
  12. 28y F, painful nodule
    • 6 comments
    • 1,445 views
  13. 59 year old female with left second toe lesion. (Courtesy of Dr. Amanda Moyer)
    • 4 comments
    • 1,280 views
  14. 51 year old female with lesion on left knee. Image 4=MITF; Image 5=p16; Image 6=Ki67
    • 4 comments
    • 1,246 views
  15. F13, right calf
    • 6 comments
    • 1,358 views
  16. M15. Known ALL. Rash 6/12. Treated as scabies. Widespread papules all over including genital area
    • 6 comments
    • 1,638 views
  17. 68F with foot nodule. Previous history of thymoma
    • 5 comments
    • 1,250 views
  18. 59 year old female with elbow lesion (courtesy of Dr Amanda Moyer)
    • 6 comments
    • 1,341 views
  19. 2 year old male with erythematous plaques; biopsy from axilla. R/o urticaria pigmentosa
    • 11 comments
    • 1,711 views
  20. M57, nasal root
    • 6 comments
    • 1,466 views
  21. F5. Melanonychia. ?Melanoma. Nail plate and nail bed biopsy
    • 9 comments
    • 1,679 views
  22. Spot Diagnosis
    • 11 comments
    • 2,180 views
  23. 76 year-old male with pedunculated lesion on abdomen. Clinical impression: tag versus acrochordon. (Courtesy of Dr. Amanda Moyer)
    • 10 comments
    • 1,784 views
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