Malignant lymphoma of the urethra in a cat

A thirteen-year-old, neutered, female Domestic Shorthair (DSH) was referred to the hospital with a suspicion of traumatic uroabdomen. Abdominal ultrasound revealed free peritoneal fluid and cellular infiltration of the urethra, kidneys, abdominal lymph nodes and cecal wall. Analysis of the free fluid confirmed the presence of uroabdomen. Cytology of the infiltrative lesions in the kidneys, urethra and lymph nodes confirmed the presence of multicentric malignant lymphoma. To the authors’ knowledge, this is the first case report of lymphomatous infiltration of the urethra in a cat.

FREE PERITONEAL FLUID IN TRAUMA PATIENTS: THE PARADIGM SHIFT

Trauma surgeons are confronted nowadays with various abdominal injuries, with a more and more increased severity, secondary to urban violence and traffic related accidents. We aim to better define the prognostic value of post-traumatic hemoperitoneum (PTH) in the nowadays era of nonoperative management of abdominal lesions, and to correlate it with the current pattern of traumatic injuries. Retrospective study of patients admitted during 24 months. Selections criteria: (1) Traumatic injury; (2) Free peritoneal fluid on preoperative imaging; (3) Surgical exploration of the abdomen. Setting: A level I trauma center. Results: There were 64 patients, with two peak frequencies between 18-35 and 50-70 years old. Abdominal wall ecchymoses were found in 36 (55%) of cases. Out of 64 cases 37 (58.7%) were transportation related, 12 (19%) caused by human aggression and 10 (16.9%) by falls. According to the Trauma Score (TS) there were 50 (78.2%) cases with TS between 14-16, 9 (17.2%) between 10 –13 and 3 (4.8%) with TS <9. More frequent extraabdominal associated lesions were: head injuries – 38 (58.5%), thoracic trauma – 34 (52.3%), orthopedic injuries – 24 (36.9%). Diagnostic peritoneal lavage was performed in 5 (7.8%) cases. FAST has a sensibility of 70.21% and CT scan a sensibility of 100%. Most frequent injured abdominal organs were the spleen – 36 (56.25%), liver 17 (26.56%) and mesentery 14 (21.87%). Laparotomy was performed in 59 (92.2%) of cases, laparoscopy in 2 (3.1%) of cases and conversion to open surgery in 3 (4.7%) cases. Mortality was 23.43%. We observed several predictive factors for mortality on univariate analysis: haemoglobin < 8g/dl (p=0.02), haematocrits < 25% (p=0.01), hemoperitoneum > 1500 ml (p=0.04), colonic trauma (p=0.001), head (p=0.01) and thoracic injuries (p=0.04). Dedicated trauma surgeons should balance between trauma kinetics details, patients’ clinical examination, and diagnostic workup, in an effort to decrease morbidity and mortality secondary to missed injuries or unnecessary laparotomies.

The Management of Blunt Abdominal Trauma Patients with Computed Tomography Scan Findings of Free Peritoneal Fluid and No Evidence of Solid Organ Injury

Modalities available for the diagnosis of blunt abdominal traumatic (BAT) injuries include focused abdominal sonography for trauma, diagnostic peritoneal lavage, and computed tomography (CT) of the abdomen/pelvis. Hollow viscous and/or mesenteric injury (HVI/MI) can still be challenging to diagnose. Specifically, there is debate as to the proper management of BAT when CT findings include free peritoneal fluid but no evidence of solid organ injury (SOI). Our objective was to determine the incidence of HVI/MI and to evaluate the management of BAT patients with CT findings of peritoneal fluid without evidence of SOI. An Institutional Review Board-approved retrospective chart review was conducted of all BAT patients with peritoneal fluid on CT admitted to Kern Medical Center from January 1, 2003 to July 31, 2004. A total of 2651 trauma admissions yielded 79 patients. Fourteen of these had no evidence of SOI. Nonoperative management was successful in only 2 of these 14, whereas 12 required an operation, with 11 being therapeutic. Trigger to operate and time from presentation to laparotomy was hypotension in three patients (164 minutes), signs of HVI/MI on CT in two patients (235 minutes), diaphragm injury on CT in one patient (95 minutes), and for peritoneal signs in six patients (508 minutes). In BAT patients with peritoneal fluid on CT without evidence of SOI, there should be a high suspicion of HVI/MI. Relying on increasing abdominal tenderness to trigger laparotomy can result in delayed treatment.