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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
    • 1,977 views
  2. Spot Diagnosis
    • 11 comments
    • 2,364 views
  3. F5. Melanonychia. ?Melanoma. Nail plate and nail bed biopsy
    • 9 comments
    • 1,871 views
  4. M57, nasal root
    • 6 comments
    • 1,586 views
  5. 2 year old male with erythematous plaques; biopsy from axilla. R/o urticaria pigmentosa
    • 11 comments
    • 1,887 views
  6. 59 year old female with elbow lesion (courtesy of Dr Amanda Moyer)
    • 6 comments
    • 1,482 views
  7. 68F with foot nodule. Previous history of thymoma
    • 5 comments
    • 1,412 views
  8. M15. Known ALL. Rash 6/12. Treated as scabies. Widespread papules all over including genital area
    • 6 comments
    • 1,823 views
  9. F13, right calf
    • 6 comments
    • 1,488 views
  10. 51 year old female with lesion on left knee. Image 4=MITF; Image 5=p16; Image 6=Ki67
    • 4 comments
    • 1,372 views
  11. 59 year old female with left second toe lesion. (Courtesy of Dr. Amanda Moyer)
    • 4 comments
    • 1,425 views
  12. 28y F, painful nodule
    • 6 comments
    • 1,570 views
  13. M85. Lower leg. Keratotic nodule. r/o SCC
    • 9 comments
    • 2,073 views
  14. 68, scrotum
    • 6 comments
    • 1,596 views
  15. 63 year old male with lesion on finger
    • 10 comments
    • 1,804 views
  16. 77 year-old female with a lesion on the tragus. (Courtesy of Dr. Amanda Moyer)
    • 5 comments
    • 1,523 views
  17. M47. Biopsy right cheek
    • 10 comments
    • 1,895 views
  18. F80. Lower lid. ?Sebaceous cyst, ?Naevus, ?Seborrhoeic keratosis
    • 12 comments
    • 2,351 views
  19. F68, right leg
    • 5 comments
    • 1,495 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
    • 1,802 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
    • 1,757 views
  22. F48 biopsy left cheek. ?Granulomatous ?Cause
    • 8 comments
    • 1,290 views
  23. F60. Bridge of nose. 1 year. Bleeds. ?fibrous papule, r/o BCC
    • 8 comments
    • 2,170 views
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