Intravascular papillary endothelial hyperplasia (IPEH) (Masson's tumor) is an unusual benign vascular lesion of the skin and subcutaneous tissue, consisting of papillary formations related to a thrombus and covered by a single layer of plump endothelial cells. The lesion is often mistaken with angiosarcoma and a group of other benign and malignant vascular lesions. The clinical and radiological findings are not specific, and the diagnosis is based on the histological examination. Intracranial lesions are extremely rare with only 32 cases been reported in the literature. Only two cases of IPEH presenting as scalp swelling have been reported in the literature. We report a case of a 3-month-old boy with IPEH of scalp in the left parietal region, which was involving the skull bone and extending intracranially.

Abdominal cerebrospinal fluid (CSF) pseudocyst is a rare complication of ventriculoperitoneal (VP) shunt. It is characterized by collection of cerebrospinal fluid in the peritoneal cavity, containing the distal end of the VP shunt catheter and is surrounded by a wall composed of fibrous tissue without an epithelial lining. In this article, we report four cases of abdominal cerebrospinal fluid pseudocyst in children with VP shunt, performed for tuberculous meningitis with hydrocephalus. We have described the etiopathogenesis, the symptomatology, the diagnostic investigations, the treatment method adopted, and proposed a simple and effective treatment protocol that has resulted in rapid resolution of symptoms in all our patients. Also, one of our cases had the largest abdominal CSF pseudocyst reported in the literature with respect to weight and height of the child.