Double rarity: malignant masquerade biliary stricture in a situs inversus totalis patient

Background

Situs inversus totalis is a rare anatomical variation of both the thoracic and the abdominal organs. Common bile duct strictures can be caused by malignant and benign diseases as well. 7–18% of the latter ones are 'malignant masquerade’ cases, as pre-operative differentiation is difficult.

Case presentation

We present the case of a 68y male patient with known situs inversus totalis and a recent onset of obstructive jaundice caused by a malignant behaving common bile duct stricture. Technically difficult endoscopic retrograde cholangiopancreatography, brush cytology, magnetic resonance cholangiopancreatography, endoscopic ultrasound, and percutaneous transhepatic drainage with stent implantation were performed for proper diagnosis. Cholecystectomy, common bile duct resection with hilar lymphadenectomy, and hepatico-jejunostomy have been performed following multidisciplinary consultation. The final histology report did not confirm any clear malignancy, the patient is doing well.

Conclusion

In situs inversus patients, both diagnostic and therapeutic procedures can lead to various difficulties. Benign biliary strictures are frequently misdiagnosed preoperatively as cholangiocellular carcinoma. Surgery is usually unavoidable, involving a significant risk of complications. The co-existence of these two difficult diagnostic and therapeutic features made our case challenging.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12893-021-01155-w.

Successful Treatment of the Gastrointestinal Manifestation of Prototheca in a Kidney Transplant Recipient: A Case Report

INTRODUCTION

The Prototheca species are achlorophyllic algae and they are recognized pathogens in animals. They have been reported to cause infections in humans; the majority of the infected patients are immunocompromised. Organ transplant recipients are at risk of infection caused by such unusual organisms.

THE CASE

Here we present a highly atypical case report of Prototheca mimicking a cecum tumor in a kidney recipient 7 years after the transplantation. Three years before this Prototheca infection, after a native nephrectomy, the patient underwent a complicated duodeno-jejunal reconstruction with feeding catheter jejunostomy. Imaging studies indicated a tumor-like space occupying lesion in the cecum. The patient was treated successfully with colon resection. Detailed histology excluded malignancy and proved Prototheca wickerhamii.

DISCUSSION

The pathogenesis and many biological aspects of human protothecosis are unclear. Usually, treatment involves both medical and surgical approaches. The surgical treatment should be complete excision. The literature suggests an extremely high mortality rate, and therefore we advocate aggressive surgery in organ transplant recipients. This case is the first report of a successfully treated gastrointestinal manifestation of protothecosis in an organ transplant recipient.

De novo Prograf versus de novo Advagraf: are trough level profile curves similar?

BACKGROUND

According to the clinical trials, Advagraf (ADV) has efficacy and safety profile similar to Prograf (PROG). The aim of this study was to compare the graft functions, dosages, and tacrolimus (TAC) trough level profile curves of patients on de novo PROG and ADV therapy.

METHODS

The ADV group included 39 de novo renal cases who had received initial immunosuppression (IS) with once-daily TAC (1 × 0.2 mg/kg from day1 after transplantation). We compared them with a PROG group of 38 transplant patients who received equivalent IS with twice-daily TAC (2 × 0.1 mg/kg from day1). In both groups, the IS was combined with antimetabolites and steroids. The mean follow-up time was similar (13.5 ± 7 days) in both groups after renal transplantation until the emission of the patients from our clinic.

RESULTS

TAC mean total daily dose was reduced and whole-blood trough levels decreased over the time in early postoperative days. Only on day 3 and day 4 after transplant, a significant higher adjustment in the ADV dosage was necessary to achieve sufficient TAC trough levels. The average TAC trough level profile curves were similar in PROG and ADV groups, but the individual curves were very different. Mainly in patients on ADV therapy, the initial concentrations were often >30 ng/mL, and in some cases on the 9th posttransplant day decreased to <5 ng/mL, then slowly increased into the required therapeutic range.

CONCLUSIONS

The results demonstrate that patients after renal transplantation can be safely treated de novo with ADV. Setting the required therapeutic TAC blood levels may require more attention to avoid the "fluctuations" of trough level profile curve during the early postoperative period. Our data suggest that dose adjustment of ADV can be carried out more carefully compared with PROG on the basis of clinical symptoms and the value of TAC blood levels to avoid acute rejection and toxicity.

Kidney transplantation in hereditary coproporphyria using tacrolimus and mycophenolate mofetil: a case report

BACKGROUND

The porphyrias are a group of disorders of the heme biosynthesis pathway that may present with acute life-threatening attacks, commonly exacerbated by a wide variety of medications. Many newer immunosuppressive medications, which are in use following kidney transplantation, have not been fully explored in acute porphyrias.

CASE REPORT

A 53-year-old woman received a kidney from a deceased donor, after being on hemodialysis for 4 years. Hereditary coproporphyria was diagnosed at age 19 years. We administered tacrolimus, mycophenolate mofetil and steroid immunosuppression. In the immediate post-transplant periods she displayed abdominal pain and transient uroporphyrin elevation in parallel with slightly elevated (15 ng/mL) tacrolimus concentrations. As the target tacrolimus level was achieved, these findings disappeared.

CONCLUSIONS

Tacrolimus, mycophenolate- mofetil, and steroid therapy for hereditery coproporphyri was safe, in the long term.

A single-center experience with kidney transplantation in the verteberal, anal, cardiac, tracheoesophageal, renal, and limb birth detects (VACTERL) association

VACTERL association is a nonrandom association of birth defects in vertebral, anal, cardiac, tracheoesophageal, renal, and limb structures. Renal anomalies are observed in ∼60%-90% of VACTERL patients. We present 3 cases to demonstrate the clinical and surgical challenges that these patients present for renal transplantation. One pediatric and 2 adult patients with the VACTERL association were transplanted at a single center; their follow-up times were 6 years, 4 years, and 3 months. Only 1 of them had a suitable native bladder to receive the kidney graft; the other 2 required bladder augmentation, 1 of which was performed after the loss of the first graft. None of these patients had an uneventful posttransplantation course. Two patients had acute rejection episodes, and 2 had reoperations for urologic complications. One patient needed a surgical intervention owing to a sigmoid prolapse. All 3 grafts worked at last examination. The 2 patients with bladder reconstructions and longer follow-ups suffered recurrent pulmonary and urinary infections and had been hospitalized several times during each posttransplantation year. In conclusion, multiorgan involvement in VACTERL patients greatly complicates medical care after transplantation; urinary tract reconstruction seems to be essential before transplantation.

Bourneville-Pringle Disease for Kidney Transplantation: A Single-Center Experience

The Bourneville-Pringle disease is an autosomal-dominant disease affecting the kidneys in about 60%, causing end-stage renal disease in about 10% of the cases. Among more than 2800 renal transplant recipients during the last 33 years, we had two patients with this original disease. A third patient who underwent bilateral nephrectomy is currently awaiting a graft. The first patient was diagnosed at the age of 20 years after a few episodes of retroperitoneal bleeding. At the age of 26 years her left kidney was removed after a rupture; it measured 7500 g, and the histology described angiomyolipomatosis. A year later she underwent a cadaveric kidney transplantation. Subsequently her right kidney was removed due to bleeding. She is currently 5 years posttransplant with stable kidney function and good health. Our second patient was nephrectomized at the age of 35 years and 38 years because of angiomyolipomatosis. She underwent a cadaveric kidney transplantation 7 years later. After 5 years of excellent kidney function and a year after her arteriovenous fistula was ligated her upperarm had to be amputated because of uncontrollable bleeding. After another 6 months, she displayed rapid progression of a jejunal tumor and during operation received 54 U of blood transfusion but died at the age of 49 years with a well-functioning graft. Our third patient consecutively underwent two nephrectomies because of angiomyolipomatosis of her kidneys at the ages of 25 and 28 years. She has two children with the same disease. In addition she carries Leyden mutation, which has caused deep venous thromboses and pulmonary emboli. She is currently on our waiting list for kidney transplantation. The Bourneville-Pringle disease is a rare indication for kidney transplantation; the prognosis of the patient is dependent on the original disease.

Comparing cytomegalovirus prophylaxis in renal transplantation: single center experience

BACKGROUND

Cytomegalovirus (CMV) presents a serious threat to CMV-seronegative recipients (R-), who have received an organ from a seropositive donor (D+).

OBJECTIVES

We compared the effectiveness of three different prophylactic protocols in CMV D+/R- patients and reviewed data on patients who received no prophylaxis.

PATIENTS AND METHODS

We reviewed 1137 kidney transplantations from 1995 to 2004. Of these, 147 recipients were CMV negative (D+/R-); 125 patients received CMV prophylaxis. Group I received CMV hyperimmune gammaglobulin only, group II received CMV hyperimmune gammaglobulin plus oral ganciclovir, and group III received prophylaxis with oral ganciclovir only.

RESULTS

In group I, CMV infection was observed in 31 of 53 patients (59%), and CMV disease was diagnosed in 9 (17%) during the prophylaxis. In the first year post transplant, a total of 41 of 53 patients (77.5%) had primary CMV infection. In group II, CMV infection occurred in 7 of 30 patients (23%), and CMV disease was diagnosed in only 2 (7%) during prophylaxis. In the first year post transplant, a total of 9 of 30 patients (30%) had primary CMV infection. In group III, 9 of 42 patients (21%) developed CMV infection during prophylaxis, and CMV disease was not observed. In the first year post transplant, a total of 13 of 42 patients (30%) had primary CMV infection. In contrast, all 22 CMV D+/R- patients without prophylaxis developed CMV infection (100%); CMV disease was diagnosed in 10 (45%), and 1 patient died.

CONCLUSIONS

Prophylaxis with hyperimmune gammaglobulin and/or oral ganciclovir significantly reduces CMV infection and disease. Prophylaxis with ganciclovir was significantly more effective than hyperimmune gammaglobulin monoprophylaxis, and more cost effective than combined prophylaxis.

Evaluation of the state of health of living related kidney transplantation donors

Renal transplantation is the optimal mode of therapy for patients with end-stage renal disease; the results are even better with living related donors. This procedure, therefore, favours the recipients, but what are the consequences for the donor? At our Department, between 1973 and 1996, 1325 kidney transplantations were performed, 78 from living, related donors (5.89%). We decided to follow up these patients and investigate the function of the remaining kidney and also their current general health status. Thirty donors (38.4%) were investigated. Of these, 25 of had normal blood pressure and 5 were hypertensive, needing antihypertensive treatment. The average age was higher in the hypertensive group (60.2/53.25 years). The time interval since transplantation was longer in the hypertensive group than in the normal one. We carried out a scintigraphy of the kidney with Tc-99mMAG-3. The mean value of the glomerular filtration rate calculated from the MAG clearance was 98.1 ml/min and this value is higher than half of the normal isotope clearance value, i.e. higher then the expected value for a single kidney. We conclude that no impairment of renal function is observed in the living, related kidney donors. In 16.66% a mild hypertension developed. With isotope investigation we found hypertrophy of the remaining kidney. Thus, after a correct preoperative assessment, unilateral nephrectomy has no long-term consequences in healthy donors.