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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
    • 2,215 views
  2. F60. Bridge of nose. 1 year. Bleeds. ?fibrous papule, r/o BCC
    • 8 comments
    • 2,429 views
  3. F48 biopsy left cheek. ?Granulomatous ?Cause
    • 8 comments
    • 1,566 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
    • 2,003 views
  5. F68, right leg
    • 5 comments
    • 1,736 views
  6. F80. Lower lid. ?Sebaceous cyst, ?Naevus, ?Seborrhoeic keratosis
    • 12 comments
    • 2,675 views
  7. M47. Biopsy right cheek
    • 10 comments
    • 2,141 views
  8. 77 year-old female with a lesion on the tragus. (Courtesy of Dr. Amanda Moyer)
    • 5 comments
    • 1,760 views
  9. 63 year old male with lesion on finger
    • 10 comments
    • 2,111 views
  10. 68, scrotum
    • 6 comments
    • 1,850 views
  11. M85. Lower leg. Keratotic nodule. r/o SCC
    • 9 comments
    • 2,359 views
  12. 28y F, painful nodule
    • 6 comments
    • 1,845 views
  13. 59 year old female with left second toe lesion. (Courtesy of Dr. Amanda Moyer)
    • 4 comments
    • 1,656 views
  14. 51 year old female with lesion on left knee. Image 4=MITF; Image 5=p16; Image 6=Ki67
    • 4 comments
    • 1,590 views
  15. F13, right calf
    • 6 comments
    • 1,731 views
  16. M15. Known ALL. Rash 6/12. Treated as scabies. Widespread papules all over including genital area
    • 6 comments
    • 2,072 views
  17. 68F with foot nodule. Previous history of thymoma
    • 5 comments
    • 1,651 views
  18. 59 year old female with elbow lesion (courtesy of Dr Amanda Moyer)
    • 6 comments
    • 1,710 views
  19. 2 year old male with erythematous plaques; biopsy from axilla. R/o urticaria pigmentosa
    • 11 comments
    • 2,231 views
  20. M57, nasal root
    • 6 comments
    • 1,864 views
  21. F5. Melanonychia. ?Melanoma. Nail plate and nail bed biopsy
    • 9 comments
    • 2,117 views
  22. Spot Diagnosis
    • 11 comments
    • 2,689 views
  23. 76 year-old male with pedunculated lesion on abdomen. Clinical impression: tag versus acrochordon. (Courtesy of Dr. Amanda Moyer)
    • 10 comments
    • 2,266 views
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