Rosai-Dorfman disease of the colon presented as small solitary polypoid lesion

Normal gastrointestinal tract inflammatory cells and review of select benign hematolymphoid proliferations

The luminal gastrointestinal tract can be a site of robust immune response in which reactive lymphoproliferative processes can sometimes be difficult to distinguish from lymphoma. In this article, we review gastrointestinal tract normal resident inflammatory cells and common nonneoplastic lymphoproliferative responses with emphasis on their differential and links to lymphoma. Topics that are covered include lymphocytic esophagitis, gastric chronic inflammation, mucosa-associated lymphoid tissue, and ulceration, small intestinal lymphoid hyperplasia, celiac disease, microscopic colitis, inflammatory bowel disease, primary immunodeficiency, graft-versus-host disease, and anti-programmed cell death protein-1 effect. We additionally present the less common differential of histiocytic processes within the gastrointestinal tract. The aim of this paper is to serve as a reference for practicing pathologists facing lymphoid, lymphoplasmacytic, or histiocytic processes in the luminal gastrointestinal tract. We hope to help the practicing pathologist distinguish benign from malignant entities and identify features requiring further workup.

Extranodal Rosai-Dorfman Disease With Mucosal Involvement of the Stomach in a Background of Autoimmune Atrophic Gastritis

Rosai-Dorfman disease (RDD), or sinus histiocytosis with massive lymphadenopathy, has been described involving both lymph nodes and extranodal sites, but extranodal RDD rarely involves the gastrointestinal tract. Although the etiology is unclear, several risk factors have been shown to be highly associated with this disease process, including viral infection and immune alterations. In this article, we present a case of a 79-year-old male with a history of autoimmune atrophic gastritis and multiple carcinoid tumors of the stomach presenting with a new stomach mass. An additional large sigmoid colon mass and adjacent enlarged lymph node was identified through imaging, prior to surgery. Through extensive pathologic analysis, we identified the first case of predominant extranodal RDD involving gastric mucosa and submucosa in a background of atrophic gastritis, with additional involvement of the sigmoid colon. Based on this case and literature review, we further discuss possible risk factors and pathogenesis of this disease process.

Consensus recommendations for the diagnosis and clinical management of Rosai-Dorfman-Destombes disease

Rosai-Dorfman-Destombes disease (RDD) is a rare non-Langerhans cell histiocytosis characterized by accumulation of activated histiocytes within affected tissues. RDD, which now belongs to the R group of the 2016 revised histiocytosis classification, is a widely heterogeneous entity with a range of clinical phenotypes occurring in isolation or in association with autoimmune or malignant diseases. Recent studies have found NRAS, KRAS, MAP2K1, and ARAF mutations in lesional tissues, raising the possibility of a clonal origin in some forms of RDD. More than 1000 reports have been published in the English literature; however, there is a lack of consensus regarding approach for the clinical management of RDD. Although in most cases RDD can be observed or treated with local therapies, some patients with refractory or multifocal disease experience morbidity and mortality. Here we provide the first consensus multidisciplinary recommendations for the diagnosis and management of RDD. These recommendations were discussed at the 32nd Histiocyte Society Meeting by an international group of academic clinicians and pathologists with expertise in RDD. We include guidelines for clinical, laboratory, pathologic, and radiographic evaluation of patients with RDD together with treatment recommendations based on clinical experience and review of the literature.

Adenocarcinoma of the cervical esophagus arising from ectopic gastric mucosa: report of two cases and review of the literature

Esophageal adenocarcinoma arising from ectopic gastric mucosa (EGM) is extremely rare. We describe here two Japanese patients with adenocarcinoma of the cervical esophagus arising from EGM. Case 1 is a 62-year-old man who had slightly red EGM in the cervical esophagus on upper gastrointestinal endoscopy (UGE). Because the biopsy showed atypical glands that were suspicious for adenocarcinoma, endoscopic submucosal dissection was performed. Histopathological examination revealed that the lesion was a well-differentiated adenocarcinoma (pT1a MM). Lymphovascular invasion was absent, and the margins were free from carcinoma. Case 2 is a 57-year-old man who had an elevated lesion with a bleeding tendency in an area of EGM in the cervical esophagus on UGE. Adenocarcinoma was diagnosed in the biopsy. Because of the presence of enlarged lymph nodes (#106recL), preoperative chemoradiotherapy was performed to reduce the size of the adenocarcinoma and lymph nodes prior to resection of the cervical esophagus and reconstruction with free jejunal grafts. Histopathological examination revealed moderately differentiated adenocarcinoma (0-I, pT2N1M0, pStage II). In both cases, adenocarcinoma was surrounded by EGM, which led to the diagnosis of EGM-derived esophageal adenocarcinoma. Here, we report its immunohistochemical characteristics in the present cases and discuss the histogenesis.

Adenocarcinoma of Cervical Esophagus Arising in the Barrett's Mucosa

Carcinoma of esophagus encompasses mainly two different histopathologic subtypes, squamous cell carcinoma and adenocarcinoma. Adenocarcinoma is the most common cancer seen. It usually arises in association with Barrett's esophagus and is localised in the distal third of the esophagus while squamous cell carcinoma predominates in the middle third. Carcinoma arising in the proximal third (cervical) of the esophagus is almost always squamous in origin. We report a case of adenocarcinoma arising in the cervical esophagus.

Rosai-Dorfman disease with spinal cord compression: a diagnostic challenge

PURPOSE

Rosai-Dorfman disease (RDD) is an uncommon benign histiocytic proliferative disorder commonly involving the cervical lymph nodes and less frequently extranodal sites, including, rarely, the central nervous system, mainly intracranially. Spinal involvement is unusual. RDD is characterized by pathognomonic histopathological features, which are decisive in the definitive diagnosis. We present the case of a 75-year-old lady who presented with an isolated thoracic vertebral lesion. She underwent 3 CT-guided biopsies, all not confirmative for a definite diagnosis, and 2 open biopsies and debulking of the lesion.

METHODS

The clinical notes, operation notes, investigations and clinic letters of the patient were reviewed. A literature search was performed using PubMed, with the keywords "Rosai-Dorfman disease", "sinus histiocytosis with massive lymphadenopathy", "histiocytic proliferative disorder".

RESULTS

Only the histopathology after the last procedure was diagnostic for Rosai-Dorfman disease. The patient was treated with steroids with marked improvement in her clinical condition.

CONCLUSIONS

This case demonstrates the challenge in making a diagnosis. RDD should be considered as a differential diagnosis in case of spinal lesion and non-diagnostic biopsy, especially in steroid sensitive lesions. The implications of the case are discussed.

Rectal extranodal Rosai-Dorfman disease diagnosed by EUS-FNA: a case report and review of the literature

Rosai-Dorfman disease (RDD), also known as "sinus histiocytosis with massive lymphadenopathy," only rarely involves the gastrointestinal (GI) tract. Therefore, this unusual site of presentation can be challenging for the pathologist. We present a case of RDD manifesting as a rectal submucosal mass associated with rectal bleeding in a 54 year old woman. The diagnosis was made on cytologic preparations obtained through endoscopic ultrasound guided fine needle aspiration (EUS-FNA) and subsequently confirmed by biopsy. To our knowledge, this is the first time extranodal RDD of the GI tract has been diagnosed by EUS-FNA. A review of previously published cases of GI RDD is presented to increase awareness of this exceptional presentation.

Heterotopic gastric mucosa of the gastrointestinal tract: prevalence, histological features, and clinical characteristics

BACKGROUND

Heterotopic gastric mucosa (HGM) may be located at sites throughout the gastrointestinal (GI) tract. Clinical characteristics of HGM, role of Helicobacter pylori infection, natural history, and relationship to neoplastic transformation have not sufficiently been explored.

AIM

To retrospectively study the prevalence, histological features, and clinical characteristics of HGM among Chinese patients who underwent upper GI endoscopy.

METHODS

Endoscopic, histological, and clinical records of patients, who underwent upper GI endoscopy (n = 6802) and colonoscopy (n = 3504), respectively, between May 2011 and May 2012, were collected and retrospectively analyzed. A total of 6716 sex- and age-matched patients without HGM were enrolled as controls.

RESULTS

HGM was diagnosed in 86 cases (51 esophageal, 0.75%; 35 duodenal, 0.51%). Male:female ratio was 1.4:1 (30/21) for esophageal HGM, 1.7:1 (22/13) for duodenal HGM, and 1.1:1 (3557/3159) for controls. Two histopathological types of HGM were identified: foveolar epithelium alone and foveoloar epithelium together with gastric glands. Helicobacter pylori were present in 19.6% of cases with esophageal HGM and 20.0% of cases with duodenal HGM. Esophageal HGM was significantly associated with dysphagia and globus; duodenal HGM was not significantly associated with GI symptoms. Intestinal metaplasia was present in two and three patients in both groups, respectively, with no dysplasia or carcinoma.

CONCLUSION

HGM was present in fewer patients undergoing upper GI endoscopy, and it was more often present in men. A careful endoscopic examination is required to diagnose HGM, and it should be supported with a biopsy when indicated.

Extranodal Rosai-Dorfman disease involving appendix and mesenteric nodes with a protracted course: report of a rare case lacking relationship to IgG4-related disease and review of the literature

Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy, is a rare disease of unknown etiology that typically presents as nodal disease in young children. However, it also can present in various extranodal sites and can be difficult to recognize if not considered in the differential diagnosis. Here, we report a case of appendix involvement by extranodal RDD, which occurred in a 69-year-old woman with a long duration of 12 years for intermittent right lower quadrant pain. The patient underwent a right hemicolectomy for a clinical diagnosis of appendiceal cancer. A mixed inflammatory infiltration of mature lymphocytes, plasma cells and histiocytes exhibiting emperipolesis were indentified. Other areas had storiform fibrosis and sclerosis admixed with numerous plasma cells. These histologic features combination with immunoreactivity for CD68 and S100 protein were indicative of a diagnosis of extranodal RDD. We discuss the clinical, pathologic findings as well as differential diagnoses and consideration of a possible relationship of this entity to IgG4-related lesion.

Rosai-Dorfman disease: a retrospective analysis of 13 cases

BACKGROUND

Rosai-Dorfman disease (RDD) is a rare, idiopathic, histiocytic proliferative disorder, the infrequent occurrence of which limits in-depth studies. Consequently, many characteristics of this disease remain unknown, restricting early diagnosis and proper treatment.

METHODS

In this study, the literature was reviewed and a retrospective analysis of the medical records of 13 patients with RDD conducted to investigate the demographic data, clinical data, laboratory and imaging results, treatment, and prognosis of this disease.

RESULTS

Of the 13 cases in our sample, 10 (77%) were purely extranodal RDD, 2 (15%) were both nodal and extranodal, and 1 (8%) was purely nodal. The locations of the 10 purely extranodal RDD lesions included the central nervous system (n = 6, 60%), nasal cavity and paranasal sinuses (n = 3, 30%), and the cutis (n = 1, 10%). The locations of the central nervous system-related RDD lesions included the cerebral subdura (n = 2, 29%), the sellar region (n = 3, 14%), the cerebral parenchyma (n = 1, 14%) and the spinal subdura (n = 1, 14%). Ten patients (77%) had stable conditions, 3 (23%) experienced recurrence, and 2 (15%) experienced recurrence and lesion metastasis.

CONCLUSIONS

RDD is rare, requiring knowledge of its clinical manifestations for a rapid and correct diagnosis. In light of the possibility of recurrence and lesion metastasis, long-term follow-up is needed. Treatment is still controversial. Future efforts should be directed at investigating the etiology and postoperative treatment for relapsing cases or those with subresected lesions.