SPR Unknown Case Contest

Welcome to the unknown case contest page!

The current unknown case is at the top; the previous cases are shown below with their answers.

We display the current unknown case for approximately two weeks, and accept answers during that time period. Please submit only one answer per case.

At the end of the year, the individual with the most correct answers will be honored with a prize (trainees will be judged separately from attendings).

If you would like to submit an unknown case for consideration to be displayed in the future, please go to this online form and follow the instructions.

Want to receive an email when a new case is posted? Join the list here.

Unknown Cases 281 - 290

Unknown case #284

Unknown case #283:Thymolipoma

Unknown case #282: External Auditory Canal Cholesteatoma

Unknown case #281: Phyllodes tumor of breast

Unknown Cases 221 - 230

Unknown Case #230: Menkes disease

Unknown Case #229: Splenic tissue (splenule) in a para-esophageal hernia

Unknown Case #228: Jejunal atresia with microcolon

Unknown Case #227: Pallister-Hall syndrome

Unknown Case #226: Popliteal venous aneurysm presenting with pulmonary thromboembolism


Unknown Case #225: Delayed ureteral obstruction due to calcified subureteral Deflux mounds


Unknown Case #224: Neuroglial Heterotopia


Unknown Case #223: C6-C7 distraction injury

Unknown Case #222: Patent ductus venosus with intrahepatic portosystemic shunting

Unknown Case #221: ARPCKD with Caroli's disease (hepatorenal fibrocystic disease)

Unknown Cases 211 - 220

Unknown Case #220: Esophageal leiomyomatosis


Unknown Case #219: Scrotal hematoma secondary to an adrenal hemorrhage

Unknown Case #218: Osteogenesis imperfecta (type 3)

Unknown Case #217: Congenital Epulis

Unknown Case #216: Phakomatous choristoma

Unknown Case #215: Omphalomesenteric duct cyst (and omphalocele)

Unknown Case #214: Cystic biliary atresia

Unknown Case #213: Intra-testicular varicocele

Unknown Case #212: Ectopic posterior pituitary

Unknown Case #211: Mayer Rokitansky Kuster Hauser Syndrome (type A)

Unknown Cases 200 - 210

Unknown Case #210: Congenital dislocation of the patella

Unknown Case #209: Ring apophysis fractures

Unknown Case #208: Pericallosal lipoma with agenesis of the corpus callosum

Unknown Case #207: Fourth branchial arch anomaly with thyroid abscess

Unknown Case #206: Osteosarcoma (radiation induced)

Unknown Case #205: Gastric mesenteroaxial volvulus (with gastric outlet obstruction)

Unknown Case #204: Calcifying discopathy

Unknown Case #203: Neuroblastoma (retropharngeal)

Unknown Case #202: Autosomal recessive polycystic kidney disease (ARPKD)

Unknown Case #201: Right coronary artery fistula to the coronary sinus

Unknown Case #200: Dacryocystocele

Unknown Cases Archives

SPR's Unknown Case Team

  • Kiery Braithwaite, MD, Assistant Web Editor - Unknown Cases
  • Peter "Buzz" Marcovici, MDWeb Editor
  • Benjamin Taragin, MDWeb Editor (Emeritus)
  • Mary B. Wyers, MD, Web Editor (Emeritus)

2020-2021 Case Winners

Attending Category

  • Richard Southard, MD: Phoenix Children's Hospital, Phoenix, AZ
  • Subramanian Subramanian​, MD: Children's Hospital of Pittsburgh UPMC, Pittsburgh, PA

Fellow/Resident Category

  • Noah Seymore, IV, MD: St. Louis Children's Hospital, St. Louis, MO
  • Sota Masuoka, MD: University of Tsukuba, Tsukuba, Ibaraki, Japan