Unusual presentation of Crohn's disease in a boy with penile swelling

Pediatric cutaneous Crohn disease: A case series of 89 patients and review

BACKGROUND

Cutaneous (or "Metastatic") Crohn disease (CCD) is a rare and underrecognized disease characterized by cutaneous granulomatous inflammation. We describe patient demographics, clinical characteristics, histology, and treatment of 89 pediatric cases of CCD, including 78 previously reported and 11 new cases seen at four academic institutions. We emphasize the efficacy of biologic mono- and dual therapy.

METHODS

PubMed identified cases using keywords including "metastatic Crohn disease" and "cutaneous Crohn disease". Patients were identified by retrospective review of the electronic health record including histopathologic diagnosis consistent with CCD. Chart review collected demographic, clinical, and histologic data.

RESULTS

Most pediatric patients with CCD are male 55% (49/89), present with edema (73/89, 82%) and erythema (47/89, 53%) of the genitals (33/49, 67%), and have intestinal Crohn disease (69/89, 78%). Oral corticosteroids (53/75, 71%) and metronidazole (29/75, 39%) are the most frequently prescribed medications. Of the 17 patients treated with tumor necrosis factor (TNF)-blockade, 94% (16/17) had partial or total clearance. Ustekinumab resulted in clearance of cutaneous disease in two patients (2/3, 67%) and partial clearance in one patient (1/3, 33%). Two cases achieved total clearance with the use of dual biologic therapy defined as the use of two biologic therapies with differing mechanisms of action or the use of a biologic therapy and small molecule inhibitor.

CONCLUSIONS

TNF blockade is an effective treatment for pediatric CCD, and interleukin-12/23 inhibitors may be similarly effective. Consideration of dual biologic therapy may be useful in pediatric patients requiring discordant therapies for their intestinal and cutaneous CD.

Systematic Review of Diagnostic Delay for Children With Inflammatory Bowel Disease

OBJECTIVES

Pediatric inflammatory bowel disease (IBD) is a complex inflammatory condition of the gut. Diagnosing IBD involves distinct longitudinal periods from first symptoms to primary care assessment, tertiary care referral, and then endoscopic confirmation. The term diagnostic delay (DD) is used if these periods are prolonged. The aim of this review was to amalgamate DD data for children with IBD, and identify factors associated with prolonged DD.

METHODS

Six health literature databases were searched (December 2020). Inclusion criteria for papers were children diagnosed with IBD before the age of 18 years, DD central tendency data, and to report a central tendency of their DD data, cohort >10 children. For analysis, all data were weighted by cohort sample size.

RESULTS

Searches identified 236 papers, and 26 were included in the final analysis with a pooled cohort of 7030 children. The overall DD periods were IBD 4.5 months [Interquartile range (IQR) 3.6-8.7 months], Crohn disease (CD) 5 months (IQR 4-7.2 months), and ulcerative colitis/indeterminate colitis/IBD-unclassified (UC/IC/IBDU) 3 months (IQR 2.2-4.9 months). The difference between subtypes was significant ( P < 0.001), with shorter DD for UC/IC/IBDU than CD ( P < 0.001) and IBD ( P < 0.001). DD periods were longer for CD than IBD ( P < 0.001). DD decreased over time for IBD ( P < 0.001) and UC ( P < 0.001) but the trend suggested an increase for CD ( P 0.069).

CONCLUSIONS

This data can be used to benchmark DD for children with IBD. Individual centers could determine whether improvements to awareness or infrastructure may reduce DD in order to minimize the risk of poor outcomes.

Metastatic Crohn's disease in a boy presenting with genital swelling

Cutaneous manifestations of Crohn's disease are uncommon and occasionally can affect the genitals with varying symptomatology. When cutaneous features precede or occur in the absence of GI symptoms, this condition may remain undiagnosed. We report the case of a 14-year-old boy who presented for evaluation of persistent penile edema with clinicopathological features consistent with a diagnosis of genital metastatic Crohn's disease, successfully treated with infliximab.