New CAP Case of the Month Available

| February 16, 2011
January 2011

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Case of the Month is a resource for pathologists to assess theirdiagnostic skills using digital whole slide imaging. Posted cases are selected from the CAP archives of the Performance Improvement Program in Surgical Pathology (PIP).
 

CLINICAL SUMMARY

Lymph Node

A 24-year-old woman was involved in a motor vehicle accident. Upon radiological work-up, a large incidental mass was identified in the anterior mediastinum. Excisional biopsy of a single enlarged lymph node was performed.

The master list with the correct answer

  1. Angiofollicular hyperplasia (Castleman disease)
  2. Follicular lymphoma
  3. Lymphocyte-predominant thymoma (WHO type B1)
  4. Plasmacytoma
  5. Reactive follicular hyperplasia
  6. Regressing follicular hyperplasia

View the appropriate diagnosis, critique and references

PREVIOUS CASE: PANCREAS
A 55-year-old woman underwent abdominal ultrasonography for evaluation of possible gallstones. Cholelithiasis could not be demonstrated, but there was a 7.5 cm multiloculated cyst involving the distal pancreas. Subsequent distal pancreatectomy revealed a multiloculated cyst (7.5 x 7.0 x 6.0 cm) filled with cloudy, amber-colored, thin fluid. The cyst wall ranged from 1mm to 3.0 mm in thickness. 
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