ABSTRACT
Brown tumors are benign bone tumors that rarely complicate hyperparathyroidism, manifesting as fibrous and erosive lesions secondary to rapid and localized osteoclast turnover. These lesions are typical of primary hyperparathyroidism, but they are not often observed. We present the case of a 72-year-old woman presenting with asthenia, bone pain, and hemiplegia. Biological analysis showed primary hyperparathyroidism, cervical ultrasound a right parathyroid adenoma that fixed on scintigraphy. When cross-sectional imaging was performed, it revealed multiple bone tumors of the axial and peripheral trunk with spinal cord compression which were diagnosed as brown tumors related to parathyroid adenoma. We illustrate through this case the importance of multidisciplinary imaging techniques before raising the diagnosis, especially in unusual pathologies such as brown tumors.
ABSTRACT
Appendiceal mucocele with unprompted pseudomyxoma peritonei is a rare malignant tumor, which is difficult to diagnose before surgery. We present a case of a 62-year-old woman, and subsequently discuss the clinical and imaging presentation of mucoceles. Findings on CT scan suggested 2 diagnoses: appendiceal mucocele with pseudomyxoma peritonei and malignant ovarian tumor with peritoneal carcinosis. MRI suggested the former diagnosis, showing a large tubular mass at the base of appendix with discontinuous wall, and no ovarian abnormality, which was confirmed by mini laparotomy and histological study of peritoneal thickened tissue. Treatment consisted of neoadjuvant chemotherapy, with a good response. This case shows the role of imaging in the preoperative diagnosis of appendicular mucoceles; CT scan and MRI, which are useful tools in identifying undetermined lesions of the appendix.
