Bladder cancer in patients with spina bifida: observation from an adult clinic

[Oncological relevance of neuro-urological diseases]

Apart from a few exceptions, there is currently little scientific evidence on the oncological relevance of neuro-urological diseases. Most research has been conducted into the association between long-term spinal cord injury with its consequences for the lower urinary tract and the occurrence of bladder cancer. These cancers differ in many ways from bladder cancers in patients without spinal cord injury: patients are 20 years younger on average, tumours are very often already muscle-invasive and poorly differentiated with a high proportion of squamous cell carcinomas, and the prognosis is poor. These characteristics also occur in spinal cord injury patients without permanent catheter drainage of the urinary bladder. Although the pathophysiological association has not been clarified in detail, the presence of a neurogenic bladder appears to be the decisive link between spinal cord injury and the occurrence of bladder cancer. Pathological pressure conditions in the urinary bladder and frequent urinary tract infections or asymptomatic bacteriuria resulting from neurogenic lower urinary tract dysfunction could be the decisive pathophysiological factors. In this respect, urinary bladder cancer in persons with a chronic spinal cord injury represents a model tumour after denervation. The clinically important question of screening requires future interdisciplinary research approaches.

Bladder cancer in patients with neurogenic bladder disorder: a comparative study of different etiologies

PURPOSE

The objective of this study was to conduct a comparative study of different etiologies of neurogenic bladder disorders (NBDs) in patients with bladder cancer (BC) regarding patient- and tumor-related parameters and their oncological outcome.

METHODS

Out of 98 patients with bladder tumors and neurogenic disease, 23 patients with BC and NBDs from Jan 1, 2010, to Dec 31, 2020, were included. The different etiologies of NBDs were merged in three groups based on the level of the nervous system (NS)-lesion: (i) central (n = 6), (ii) spinal cord (n = 10), and (iii) peripheral lesions (n = 7).

RESULTS

Patients with lesions at the spinal cord level were younger at the time of BC diagnosis compared to patients with central or peripheral NS lesions (54 vs. 68 vs. 78 years, p = 0.0219). However, the latency to malignant transformation was more than twice as long (33 vs. 15 years, p = 0.0108). Most tumors were muscle-invasive or locally advanced BCs (62%) and presented lymph node metastases (55%), resulting in a poor mean overall survival of 30.9 ± 3.6 months. No significant differences regarding histopathology, tumor stage, and oncological outcome could be observed between the groups.

CONCLUSION

Patients with NBDs have a poor prognosis regardless of their etiology or the level of NS lesion. Patients with spinal cord lesions, including congenital NBDs, appear to develop BC at a young age, but compared to other etiologies latency from NBD to BC is longer.

Urological malignancies in neurogenic patients

PURPOSE OF REVIEW

To review recent literature related to urologic malignancies in patients with neurogenic lower urinary tract dysfunction (NLUTD). We performed a literature search of electronic databases (PubMed, ScienceDirect, Scopus, and CIANHL), with a focus on articles published between January 2015 and December 2019.

RECENT FINDINGS

Recent reports demonstrate a lower incidence of bladder cancer in the NLUTD population than previously found, although still significantly higher than the general population. Bladder cancer in patients with NLUTD is usually diagnosed at a younger age, and is associated with higher rates of squamous cell cancer, a higher stage at presentation, and increased mortality. Evidence for screening for bladder cancer in NLUTD is conflicting, with no formal protocols proven for general use. NLUTD has been shown to have a lower rate of prostate cancer, and may be associated with an earlier diagnosis of renal cancer.

SUMMARY

Genitourinary malignancies, although still rare, are an important source of morbidity and mortality in patients with NLUTD. Physicians should recognize that bladder cancer in NLUTD is often a lethal disease. Further research is needed to assist physicians with early recognition of these malignancies to improve patient outcomes.

Bladder cancer in patients with spina bifida: a serious risk

PURPOSE

After bladder augmentation (BA) using bowel segments, it is known that there is a risk for secondary malignancies. It remains unclear whether this also applies to spina bifida (SB) patients without BA. The aim of this study was to analyze the frequency of bladder cancer (BC) in SB at a single tertiary institution and assess the patients' oncologic outcome.

METHODS

Patients with SB and BC treated from January 2016 until March 2020 were included and corresponding data were collected retrospectively. Endpoints were progression-free survival (PFS) and overall survival (OS).

RESULTS

Among 132 adult patients with SB, four with a median age of 34.5 years (IQR 31.5-36.8, range 31-37) had a BC. None of the patients had undergone BA. Most common symptoms included recurrent urinary tract infections (UTI) (75%) and hydronephrosis (75%). At the time of the diagnosis, tumors were locally advanced (≥ T3) and lymph-node positive in all cases. All patients underwent radical cystectomy with adjuvant chemotherapy in two out of four cases. Histology showed squamous cell carcinomas (SCC) or at least a squamous cell component in all patients. The median PFS was 5.9 months (IQR 5.1-124.5) and the median OS was 8.7 months (IQR 6.3-125.5).

CONCLUSIONS

SCC in SB can appear at a young age and is usually diagnosed in an advanced tumor stage with poor prognosis despite radical surgical resection. Patients with SB without BA with clinical symptoms, new onset of hematuria, and/or upper tract dilatation should receive a cystoscopy ± further imaging.

Incidental bladder cancer at initial urological workup of spinal cord injury patients

STUDY DESIGN

Retrospective descriptive study.

OBJECTIVES

To compare histopathological findings and the long-term course of SCI patients with bladder cancer found incidentally at the initial urological workup to those diagnosed with bladder cancer many years after the onset of SCI.

SETTING

Spinal cord injury center in Germany.

METHODS

Data and follow-up of consecutive in- and out-patients with SCI admitted at a tertiary spinal cord injury center between January 1, 1998 and December 31, 2018 were screened retrospectively. All patients with acquired SCI were evaluated for pathological findings in the urinary bladder present at the time of SCI on the initial urological workup. Data of 37 long-term SCI patients from the same center with diagnosed bladder cancer and data of the general German population served as reference groups. Descriptive statistics were applied.

RESULTS

In total, four patients with bladder cancer at initial urological workup were assessed. They all had non-muscle invasive bladder cancer. Two of the patients were cystectomized 34 and 106 months after first bladder cancer diagnosis, due to relapsing tumor and progressive renal failure, respectively. In both cases no tumor was found in the resected bladder. All four patients are currently alive with no tumor and a mean follow-up of 105 months.

CONCLUSIONS

In incidental bladder cancer observed at the initial urological workup after acquired SCI, the duration of SCI, at least in the first 5 years, does not noticeably contribute to a poor prognosis, i.e., progression to muscle invasive bladder cancer (≥T2) or a higher grading (G3).

Age-related urologic problems in the complex urologic patient

PURPOSE

Improved medical care throughout childhood and adolescence has enabled patients with complex urological abnormalities to live longer into adulthood. These patients are now at risk of developing common, age-related, urological conditions. This review aims to review existing data and make recommendations in areas where expert opinion is currently lacking METHODS: This review represents the joint SIU-ICUD (Société Internationale d'Urologie-International Consultation on Urological Disease) consultation on congenital lifelong urology. The results of this analysis were first presented at a joint consultation of the ICUD and SIU at the 2018 SIU annual conference in Seoul, South Korea.

RESULTS

BPH may present differently in patients with neurogenic bladder. Thorough assessment of neurological status, bladder and sphincter function is required before offering any bladder outlet surgery. Prostate specific antigen screening should be offered to men aged 50-69 with neurogenic bladders if they have good life expectancy. Multi-parametric MRI and transperineal biopsy would be the investigations of choice if feasible. Surgery for localized disease should only be done by surgeons with the relevant expertise. Bladder cancer in this patient group is more likely to present at a later stage and have a worse prognosis. Parenthood is achievable for most, but often requires assistance with conception. Pregnant women who have had previous urogenital reconstructive surgery should be managed in appropriate obstetric units with the involvement of a reconstructive urologist.

CONCLUSIONS

Most evidence regarding complex urogenital abnormalities comes from the pediatric population. Evidence regarding common, age-related urological issues is generally from the 'normal' adult population. As patients with complex congenital urological conditions live longer, more data will become available to assess the long-term benefits of intervention.