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Diagnostics Histology, Clinical care

Case of the Month

A 49-year-old man presented with a testicular mass.

Based on your diagnosis, which of the following histologic findings incurs a worse prognosis?

a. Anaplastic change
b. Anaplastic change and sarcomatous change
c. Sarcomatous change
d. Germ cell neoplasia in situ

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We will reveal the answer next month,

Do you have an interesting case that you would like us to feature? Email it to [email protected]

Answer to January’s Case of the Month…

B. Osseous choristoma

Osseous choristoma, a well-circumscribed mass of viable lamellar bone surrounded by fibrous connective tissue, may occur as a sessile or pedunculated mass mostly on the posterior dorsum of the tongue, near the foramen cecum (1) (2). Most develop in females in the second or third decade, and the treatment of choice is surgical excision.

Submitted by Joana dos Santos, Anatomical Pathology Resident, Unidade Local de Saúde de Matosinhos, Hospital Pedro Hispano, Matosinhos, Portugal.


  1. BR Adhikari et al., “Osseous choristoma of the tongue: two case reports”, J Med Case Rep, 17 (2016). PMID: 26983573.
  2. E Calonje et al., McKee’s Pathology of the Skin, 4th edition. Saunders: 2012.
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