Unilateral Obstructive Urinothorax Secondary to Colorectal Carcinoma Yuval Tal MD Phd1*, Ido Weinberg MD Msc3*, Arie Ben-Yehuda MD1 and Mordechai Duvdevani MD2
Total Page:16
File Type:pdf, Size:1020Kb
IMAJ • VOL 17 • MAy 2015 CASE COMMUNICATIONS Unilateral Obstructive Urinothorax Secondary to Colorectal Carcinoma Yuval Tal MD PhD1*, Ido Weinberg MD MSc3*, Arie Ben-Yehuda MD1 and Mordechai Duvdevani MD2 1Division of Internal Medicine and 2Department of Urology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel 3Section of Vascular Medicine, Massachusetts General Hospital, Boston, MA, USA metastasis that had been excised 5 and 3 years (PET)-CT was performed and demonstrated KEY WORDS: urinothorax, urinary tract obstruction, earlier, respectively. Consequently he received a para-aortic mass, consistent with tumor colorectal carcinoma, pleural effusion 5-fluorouracil and leucovorin as adjuvant [Figure 1B]. Laparotomy demonstrated that IMAJ 2015; 17: 321–322 therapy for 6 months. Prostate carcinoma, the tumor involved the ligament of Treitz categorized as low risk, had been treated with and the fourth part of the duodenum and radiation and short-term treatment with gos- penetrated the left ureter. Pathologic exami- rinothorax (or urothorax) is the pres- erelin 2 years prior to the current hospitaliza- nation revealed a well-differentiated adeno- U ence of urine in the pleural space. It is tion. His past medical history also included carcinoma staining positively for CDx2 rare, is usually iatrogenic, can occur after pemphigus vulgaris treated with maintenance and carcinoembryonic antigen (CEA) on urinary tract manipulation, or may be due dose prednisone, and ischemic heart disease immunohistochemistry which was noted to to urinary tract obstruction [1]. It can be without congestive heart failure. originate from the colon [Figure 1C, D, E]. bilateral or unilateral, usually on the same On admission he was afebrile and had no Following surgery the patient was side as the obstruction, and resolves after flank pain. Physical examination revealed treated with 2 week cycles of 5-fluorouracil, the obstruction is resolved [2]. Obstructive decreased breath sounds on the left and oxaliplatin, leucovorin and bevacizumab urinothorax in adults is usually secondary dullness to percussion. Cardiac examination on the assumption that he had metastatic to bilateral, and not unilateral obstruction of was normal and there was no jugular venous colon cancer, despite a normal surveillance the urinary tract. When unilateral obstruc- distension or peripheral edema. Chest X-ray colonoscopy. Oxaliplatin was stopped after tion causes urinothorax it is usually associ- revealed left pleural effusion. Pleural tap 8 months of treatment due to neuropathy. ated with an occult nephro-pleural tract or resulted in 1300 ml of clear yellowish fluid, Bevacizumab was discontinued 3 months a single functioning kidney [1]. Only two with lactate dehydrogenase (LDH) of 504 later because of gastrointestinal bleeding. He previous reports described non-traumatic U/L (634 U/L in the serum) and total protein was then treated with 5-fluorouracil, leuco- urinothorax associated with unilateral uri- < 20 g/L. Pleural fluid-to-serum creatinine varin and irinotecan. Repeat colonoscopies nary tract obstruction secondary to tumor. ratio was 117/80 µmol/L. Urea measured and CT did not show recurrence of tumor. In the first, the authors reported a recurrent 14 mg/dl in the fluid and 12.6 mg/dl in the pleural effusion secondary to an abdominal serum. Fluid pH was 6.92. Fluid cytology mass causing hydronephrosis and massive was normal. Computed tomography (CT) of COMMENT urinoma, and in the second, Looi and Lee the chest, abdomen and pelvis demonstrated We present a case of non-traumatic unilateral [2] described urinothorax contralateral to a left pleural fluid accumulation, left hydrone- hydronephrosis associated with urinoma and mildly obstructive renal mass without peri- phrosis and a large perinephric fluid collec- urinothorax. To the best of our knowledge nephric fluid collection. We report a case of tion [Figure 1A]. Urine cytology revealed this is the first such case secondary to metas- non-traumatic urinothorax associated with cancerous cells. Fluid re-accumulated tasis of colon adenocarcinoma penetrating unilateral urinary tract obstruction and despite repeated pleural taps. A thoracocen- the ureter. Suggested mechanisms for uri- perinephric fluid accumulation. tesis was performed and 4 L of fluid were nothorax include extension of urine through evacuated. Repeat pleural fluid cytological the diaphragm or its passage via lymphatic examinations failed to demonstrate cancer- connections between the peritoneum and PATIENT DESCRIPTION ous cells. Hydrothorax was eliminated only pleural space following the negative intra- A 71 year old man presented after a week of after insertion of a nephrostomy drain and pleural pressure [2]. The presence of urinoma fever (38°C), chills and shortness of breath. did not recur. Ureteroscopy was performed, in our case suggests the first mechanism. His medical history consisted of stage II showing external pressure on the left ureter, Urinothorax has been previously describ- sigmoid adenocarcinoma and a single liver without any sign of urothelial tumor. The ed in relation to bilateral urinary tract obstruc- *The first two authors contributed equally to rest of the examination was within nor- tion, urinary tract manipulations, inflam- this study mal limits. Positron emission tomography mation, malignancy, trauma, shock wave 321 CASE COMMUNICATIONS IMAJ • VOL 17 • MAy 2015 case. The urea concentration in the pleural A B fluid was similar to that of the serum. Urea has a low molecular weight and diffuses rapidly through the pleura [4]. Of note, in most previous reports no biochemical characteristics of the fluid were provided and the diagnosis was made according to the clinical relationship with urinary tract obstruction, also present in our case [1]. Spontaneous urinothorax is a rare clini- cal manifestation and seldom anticipated; diagnosis and treatment can be mislead- [A] Axial CT image of the patient’s chest showing a large left [B] Axial CT image of the patient’s abdomen, showing ing. A therapeutic trial with furosemide pleural effusion displacing the mediastinum to the right a retroperitoneal mass (arrow) and fluid collection can actually elevate pleural fluid quantity around the left kidney (arrowheads) by increasing urine output, thus produc- ing more fluid. As in the case presented, C treatment of the urinary tract obstruction resolves the urinothorax. Recently a large retrospective trial was published in support of non-operative management of urinomas; however, the research referred only to blunt trauma-related renal injuries and conclu- sions could not be drawn for the manage- ment of non-traumatic obstructions [5]. In conclusion, non-traumatic, unilateral [C] Axial PET image of the patient’s abdomen showing radionucleotide uptake correlating to the retroperitoneal mass urinothorax is a rare clinical manifestation of upper urinary tract obstruction. Elimination D E F of the obstruction can alleviate or even elimi- nate the process. We therefore suggest that in the presence of unilateral hydrothorax urino- thorax be suspected and sought, especially in patients with a history of metastatic cancer. Correspondence Dr. Y. Tal [D] Well-differentiated adenocarcinoma, composed of well-defined malignant glands (hematoxylin & eosin, Allergy and Clinical Immunology Unit, Dept. of original magnification x 200). The neoplastic epithelial cells are immunoreactive for the colonic markers CDx2 Medicine, Hadassah-Hebrew University Medical Center (Ein Kerem Campus), P.O. Box 12000, [E] and CEA [F] (original magnification x 400) Jerusalem 91120, Israel email: [email protected] lithotripsy, and posterior urethral valve. also failed to find additional non-traumatic References Congenital cases also exist. It has been unilateral causes for urinothorax. Obstruc- 1. Garcia-Pachon E, Romero S. Urinothorax: a new suggested that urinothorax can be either tive urinothorax was considered different approach. Curr Opin Pulm Med 2006; 12: 259-63. 2. Looi LM, Lee P. An unusual case of unilateral obstructive, following bilateral urinary to traumatic and was defined as bilateral. transudative pleural effusion. Chest 2006; 130: 328S. tract obstruction, or traumatic, which is Accordingly, only two cases of unilateral non- 3. Tsai CF, Liao CY, Lin CH, Shiao CC. Huge urinoma usually unilateral [1]. Unilateral ligation of traumatic urinary tract obstruction associ- presenting as a bulging mass. Nephrology 2013; 18: the ureter in dogs failed to produce urino- ated with urinothorax were previously de- 477. 4. Laskaridis L, Kampantais S, Toutziaris C, et al. thorax. A recently published case described scribed. Urinothorax – an underdiagnosed cause of acute a unilateral urinoma secondary to obstruc- Urinothorax is the only cause of a tran- dyspnea: report of a bilateral and of an ipsilateral urinothorax case. Case Rep Emerg Med 2012; 2012: tion from nephrolithiasis in a patient with sudate with low pH (pH < 7.3), although 395653. multiple metastases. Although the obstruc- the LDH in the fluid may be relatively high 5. van der Wilden GM, Velmahos GC, Joseph DK, tion resulted in a large abdominal bulging [1]. A pleural fluid-to-serum creatinine et al. Successful nonoperative management of the most severe blunt renal injuries: a multicenter mass, it did not evolve to urinothorax [3]. ratio greater than 1 may be sensitive, albeit study of the research consortium of New England Comprehensive review of the literature not specific [1]. This is consistent with our Centers for Trauma. JAMA Surg 2013; 148: 924-31. 322 .