Benign pneumatosis intestinalis in a pediatric patient with multiple risk factors including granulomatosis with polyangiitis: a case report and review of the literature

Pneumatosis cystoides intestinalis in granulomatosis with polyangiitis: a case report

This study aims to investigate the clinical manifestations, imaging features, and treatment considerations in the rare occurrence of pneumatosis cystoides intestinalis (PCI) within the context of granulomatosis with polyangiitis (GPA). We present the case of a 71-year-old Chinese woman diagnosed with GPA, who, despite exhibiting fatigue, knee pain, and nasosinusitis, remained asymptomatic for PCI. Regular follow-up revealed laboratory and imaging evidence indicative of clinical relapse. The patient received GPA treatment but was not specifically managed for PCI. Serial abdominal CT scans were performed to monitor the progression of PCI. Radiological diagnosis confirmed the presence of gas within the colon wall, indicating pneumatosis cystoides intestinalis. Notably, the patient remained asymptomatic for abdominal complaints. Despite ongoing GPA treatment, a follow-up CT scan 2 months later revealed persistent gas within the colon wall, suggesting a persistent state of PCI. Patient consent was obtained for the publication of this case report, and ethical approval was not obtained as this study constitutes a retrospective review. This case underscores the importance of recognizing pneumatosis cystoides intestinalis as a potential complication in GPA patients, even in the absence of typical abdominal symptoms. Further research is warranted to elucidate the underlying mechanisms and optimal management strategies for this rare association. Key points • Rare association: This case report sheds light on the uncommon occurrence of pneumatosis cystoides intestinalis (PCI) within the context of granulomatosis with polyangiitis (GPA), adding to the understanding of the spectrum of manifestations of GPA. • Clinical manifestations: Despite being diagnosed with GPA and experiencing symptoms such as fatigue, knee pain, and nasosinusitis, the patient remained asymptomatic for PCI, emphasizing the importance of vigilant clinical monitoring in GPA patients. • Imaging features: Radiological imaging, including serial abdominal CT scans, played a crucial role in diagnosing and monitoring the progression of PCI in the absence of typical abdominal complaints, highlighting the utility of imaging modalities in detecting silent manifestations of gastrointestinal complications in GPA. • Treatment considerations: The case highlights the challenge of managing PCI in GPA patients, especially when asymptomatic, and raises questions about the optimal management strategies for such rare associations, underscoring the need for further research in this area.

Pneumatosis cystoides intestinalis in dermatomyositis: a case series report and literature review

Pneumatosis cystoides intestinalis (PCI) in adult dermatomyositis (DM) is rarely described. This report aimed to describe the clinical features and prognosis of PCI in six adult patients with DM (four with anti-MDA5 antibodies, one with anti-SAE antibodies, and one with anti-TIF-1γ antibodies). Except for one patient with transient abdominal pain, the remaining five patients were asymptomatic. PCI occurred in the ascending colon in all patients, of whom five had free gas in the abdominal cavity. No patients received excessive treatment, and PCI disappeared in four patients during the follow-up. Additionally, we reviewed previous studies on this complication.

The spectrum of pneumatosis intestinalis in the adult. A surgical dilemma

Pneumatosis intestinalis (PI) is a striking radiological diagnosis. Formerly a rare diagnostic finding, it is becoming more frequently diagnosed due to the wider availability and improvement of computed tomography scan imaging. Once associated only with poor outcome, its clinical and prognostic significance nowadays has to be cross-referenced to the nature of the underlying condition. Multiple mechanisms of pathogenesis have been debated and multiple causes have been detected during the years. All this contributes to creating a broad range of clinical and radiological presentations. The management of patients presenting PI is related to the determining cause if it is identified. Otherwise, in particular if an association with portal venous gas and/or pneumoperitoneum is present, the eventual decision between surgery and non-operative management is challenging, even for stable patients, since this clinical condition is traditionally associated to intestinal ischemia and consequently to pending clinical collapse if not treated. Considering the wide variety of origin and outcomes, PI still remains for surgeons a demanding clinical entity. The manuscript is an updated narrative review and gives some suggestions that may help make the decisional process easier, identifying patients who can benefit from surgical intervention and those who can benefit from non-operative management avoiding unnecessary procedures.

Pneumatosis intestinalis post steroid use in a patient with immune-related adverse events: Case report, literature review and FAERS analysis

Introduction: The accurate diagnosis of pneumatosis intestinalis (PI) is increasing despite patients’ limited identification of etiologic factors. Recently a patient with lung squamous carcinoma who developed pneumatosis intestinalis following methylprednisolone administration for immune-related adverse events was treated at our hospital. Subsequent a literature review and an analysis of the FDA Adverse Event Reporting System (FAERS) database enabled the identification of additional cases of pneumatosis intestinalis.

Methods: A literature review of the MEDLINE/PubMed and Web of Science Core Collection databases using standard pneumatosis intestinalis search terms to identify published cases of immune checkpoint inhibitors (ICIs) or steroids causing pneumatosis intestinalis were performed. A separate retrospective pharmacovigilance study of FAERS enabled the extraction of unpublished cases of pneumatosis intestinalis between the first quarter of 2005 and the third quarter of 2022. Disproportionality and Bayesian analyses were performed to identify signal detection in reported odds ratios, proportional reporting ratios, information components, and empirical Bayesian geometric means.

Results: Ten case reports of steroid-related pneumatosis intestinalis were retrieved from six published studies. The implicated drug therapies included pre-treatment with steroids before chemotherapy, combination therapy with cytotoxic agents and steroids, and monotherapy with steroids. In the FAERS pharmacovigilance study, 1,272 cases of immune checkpoint inhibitors or steroid-related pneumatosis intestinalis were incidentally reported. The signal detected in five kinds of immune checkpoint inhibitors and six kinds of steroids implied a positive correlation between the drugs and adverse events.

Conclusion: Steroids might be the etiologic factors in the current case of pneumatosis intestinalis. Reports supporting the role of steroids in suspected cases of pneumatosis intestinalis can be found in literature databases and the FAERS database. Even so, as documented in FAERS, immune checkpoint inhibitors-induced pneumatosis intestinalis should not be excluded.

Pneumatosis Intestinalis Due to Child Abuse

Pneumatosis intestinalis (PI) and the presence of portal venous gas (PVG) are commonly considered pathognomonic for necrotizing enterocolitis in the neonatal period; however, these 2 radiographic findings have been documented in all age groups in a variety of clinical settings and medical conditions including respiratory, cardiac, rheumatologic, gastrointestinal disorders, and traumatic injury. In children, intramural dissection of intestinal gas in the absence of clinical symptoms suggestive of necrotizing enterocolitis should raise concern for a traumatic etiology, including injuries sustained from child physical abuse. Several pediatric cases of traumatic PI and PVG have been reported; however, these cases described additional, associated abdominal injury or featured toddlers - a single case report of accidental abdominal trauma resulted in PVG in a preterm infant. We report the case of a neonatal victim of child physical abuse presenting with PI and PVG in the absence of other evidence of abdominal trauma.

Neumatosis intestinal, un hallazgo intraoperatorio inusual

Introducción. La neumatosis intestinal (NI) es una entidad rara que se caracteriza por la presencia de gas en la pared del intestino y suele diagnosticarse como un hallazgo radiológico incidental.Caso clínico. Se presenta el caso de una paciente de 63 años con historia de epigastralgia crónica, quien consulta por cuadro clínico de una semana de evolución consistente en dolor abdominal difuso asociado a distensión abdominal, anorexia, emesis y diarrea. Al examen físico se encuentra un abdomen distendido, timpánico, doloroso a la palpación, con ruidos intestinales disminuidos y sin signos de irritación peritoneal. Se realiza radiografía simple de abdomen que evidencia sobredistensión de asas intestinales, formación de niveles hidroaéreos, ausencia de gas distal y neumoperitoneo, por lo que es llevada a laparotomía exploratoria, donde se halla NI severa de los últimos 100cm de íleon.Discusión. La NI, en especial la variante quística, es una patología inusual de la que, según la revisión realizada, se han descrito 565 casos en todo el mundo y 6 en Latinoamérica; es posible que su difícil diagnóstico haga que pase desapercibida. Aunque se considera que el diagnóstico es netamente radiológico, el 40% de los casos se evidencian en hallazgos quirúrgicos, como sucedió en esta paciente. La indicación quirúrgica para este caso fue el neumoperitoneo, complicación más común (51%).

Four Cases of Pneumatosis Cystoides Intestinalis Complicated by Connective Tissue Diseases

Pneumatosis cystoides intestinalis (PCI) is a rare disease that involves the presence of gas in the intestinal wall. Connective tissue disease (CTD) is a major cause of secondary PCI. In addition to the nature of CTDs, the use of prednisolone and some immunosuppressants, and the presence of complicating diseases such as diabetes mellitus, constipation and pulmonary diseases are involved in the development of PCI. This report describes four cases of PCI with different CTDs (granulomatosis with polyangiitis, rheumatoid arthritis, dermatomyositis, and overlap syndrome) and discusses the background of each patient and common risk factors for the occurrence of PCI.