You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Pyeloureteral filling defects associated with systemic anticoagulation: a case report. The etiology of pyeloureteritis cystica has long been attributed to chronic infection and inflammation. A case is presented that is unique in that the acute onset and the rapid resolution of pyeloureteral filling defects in this patient were documented by radiography. There is no evidence of antecedent or concurrent infection in this patient. The disease occurred subsequent to the initiation of heparin therapy for suspected pelvic thrombophlebitis and cleared rapidly subsequent to its discontinuation. The rate of resolution of the radiographic findings may be helpful in distinguishing between true pyeloureteritis cystica and submucosal hemorrhage.
{"Chemical": ["heparin"], "Disease": ["submucosal hemorrhage", "infection", "inflammation", "thrombophlebitis", "pyeloureteritis cystica"]}