A case report and a review of the literature]

Dystrophic calcification in gastric carcinoma is an unusual finding usually associated with mucinous carcinomas. Psammomatous calcification is rare; indeed there are only seven cases reported to date. We present a case of a 73 year old male with tubular adenocarcinoma that revealed numerous globular shaped calcified bodies of psammomatous type within the tumor. The pathogenesis and prognostic significance are discussed.

Juvenile psammomatoid ossifying fibroma of the posterior fossa: a case report and review

Background

Ossifying fibroma is a rare benign bone tumor that occurs mostly in the jaw, but also affects paranasal sinuses and fronto-ethmoidal complex. Occipital bone is an extremely rare location for these tumors; only two cases have been reported.

Methods

We present the first case reported as psammomatoid subtype of ossifying fibroma, according to the 2005 WHO classification. An 18 years old male patient with infratentorial tumor, in the occipital bone, that produces mass effect over the cerebellum.

Conclusions

This case may provide a guide to consider these lesions for a more rapid and precise diagnostic in future cases.

Psammomatous Cavernous Malformation Presenting as Drug-Resistant Epilepsy: Case Illustration and Review of Literature

BACKGROUND

Psammoma bodies (PBs) are whorled, laminated hyaline spherules containing calcium deposits. Intracranially, the presence of PBs is associated with variants of meningioma and pituitary lesions, as well as aging choroid plexus. Limited information exists on their presence in vascular malformation.

RESULTS

In this report, we describe a case of an adolescent male with drug-resistant epilepsy that was surgically managed at our regional epilepsy center. The epileptogenic focus was determined to be emanating from an indolent right insular lesion. Histopathologic evaluation showed the abundance of intravascular and perivascular PBs. Immunohistochemical evaluation confirmed the vascular origin using vascular markers. The unusual presence of PBs in a vascular lesion was unanticipated.

CONCLUSIONS

Based on our case, we present the clinicoradiologic characteristics, supplemented with intraoperative findings, for this unusual lesion. In addition, because of the unusual presence of PBs in vascular lesions, we provide the findings of a systematic literature review to show the association of PBs with intracranial vascular lesions.