A rare case report of an appendico-sigmoid fistula complicating untreated acute appendicitis: Unraveling complexity in diagnosis and treatment.

INTRODUCTION: Appendiculocolonic fistulas, often arising from benign conditions like abscess-forming appendicitis, manifest subtly. This case emphasizes their rarity, intraoperative discovery during acute appendicitis, and explores diagnostic intricacies, sensitive imaging, and distinctions in managing benign versus malignant cases. CASE PRESENTATION: A 23-year-old intellectually disabled patient, lacking regular medical follow-up and surgical history, presented to our emergency department with persistent right iliac fossa pain six months ago. Due to financial constraints, a CT scan was not performed despite an inflammatory syndrome, and the patient left against medical advice. Currently experiencing the same symptoms, investigations led to the diagnosis of acute appendicitis with a probable appendico-sigmoid fistula. Surgical exploration confirmed the appendico-sigmoid fistula and the presence of an uncomplicated Meckel's diverticulum. A conservative approach, including appendectomy, Meckel's diverticulum resection, and sigmoid fistula suturing, yielded favorable results. CLINICAL DISCUSSION: Appendiculocolonic fistulas often arise from acute or chronic appendicitis with local abscess formation. Our case highlights the unusual progression of untreated acute appendicitis, evolving into an appendico-sigmoid fistula. While generally benign, documented cases of malignant causes, such as appendiceal cancer, exist. Diagnosis is intricate, requiring diverse methods, with abdominal CT as a sensitive imaging tool. Conservative approaches are generally recommended for benign cases. CONCLUSION: Appendiculocolonic fistulas, though rare, pose a clinical challenge due to their elusive symptoms. Primarily associated with benign conditions, notably abscess-forming appendicitis, or, as in our case, untreated acute appendicitis. This case underscores the role of abdominal CT in precise diagnosis, guiding treatment decisions based on the lesion's nature.

Arteriovenous gastric malformation: A challenging diagnosis. A case report.

INTRODUCTION: Gastro-intestinal bleeding etiological diagnosis could be challenging especially for rare etiologies as it was the case of our patient having an arteriovenous gastric malformation. CASE PRESENTATION: A 50-years old man consulted for hematemesis. Esophagogastroduodenoscopy didn't show bleeding signs. Angio-scan revealed an arteriovenous gastric malformation. Median laparotomy revealed multiple radiologically unsuspected great omentum arteriovenous malformations and confirmed the existence of this arteriovenous malformation in the posterior part of the lesser curvature guided by per-operative esophagogastroduodenoscopy. Atypical gastrectomy was performed. DISCUSSION: Our case illustrated a rare life-threatening condition with a challenging diagnosis. Arteriovenous gastric malformation accounted for 1 to 2 % of nonvariceal upper gastrointestinal bleeding. Great omentum localization corresponded to an exceptional condition that had been reported in only one adult patient and one childhood case. Its pathogenesis is still unknown. CONCLUSIONS: Arteriovenous gastric malformation had to be considered in case of normal endoscopic esophagogastroduodenoscopy. Computed tomography had to be done for both diagnosis and therapeutic purposes.

Exceptional vascular variants during oncological right colectomy: Case reports.

INTRODUCTION: Carcinological right colectomy with complete D3 mesocolon excision has to be guided by vascular variants in order to avoid complications especially in exceptional cases as illustrated by our two cases. CASE PRESENTATIONS: Two women had right colectomies with compete D3 mesocolon excision via laparotomy for right colon tumors with a non-modal anatomy: an X-shaped relationship between the superior mesenteric artery and the superior mesenteric vein and a Y-shaped superior mesenteric vein, an ileocolic artery behind the two trunks, a right colic artery behind the left trunk, and the middle colic artery anterior to the main trunk of the superior mesenteric vein respectively. DISCUSSION: Our cases illustrated extremely rare vascular variants during right colectomy with complete mesocolic excision. These variants should be identified based on the computed tomography with coronal reconstructions allowing to guide surgical procedure before the operating room in order to anticipate per-operative difficulties and reduce morbidity. CONCLUSIONS: Vascular anatomical study based on computed tomography with coronal reconstructions was mandatory before right colectomy with complete mesocolic excision and D3 lymphadenectomy.

Monteggia fracture with unreducable anterior dislocation of the radial head and a lesion of the external collateral ligament of the elbow.

Monteggia described a fracture of the proximal third of the ulna with anterior dislocation of the radial head from both the proximal radioulnar and radiocapitellar joints. The key treatment principle in Monteggia fractures is stable anatomic alignment of the ulna. We present an uncommon case of a Monteggia fracture-dislocation with an unreducable anterior dislocation of the radial head and associated with a lesion of the lateral collateral ligament of the elbow. The patient in our report had a successful clinical outcome and functional range of motion after rigid fixation of the ulnar shaft fracture and exploration of the elbow joint, reduction of the radial head and repair of the lateral collateral ligament. This case is unusual because of the association of a complete tear of the external collateral ligament of the elbow.

An unusual Monteggia equivalent type 1 lesion: Diaphyseal ulna and radius fractures with a posterior elbow dislocation in a child.

In this report, we describe an extremely unusual Monteggia equivalent type 1 lesion in a 10-year-old boy following a fall from a height of 1 m. On the plain radiographs, our patient had a particular Monteggia equivalent type 1 injury associating a posterior elbow dislocation with diaphyseal radius and ulna fractures. The patient was treated by closed reduction technique. At six months of follow-up, the fractures were consolidated and the elbow was stable. To our knowledge, only 8 adult cases and one paediatric observation with similar lesions had been reported through medical literature. Therefore, the aim of our case report is to remind this rare entity and also to provide a comprehensive review of the literature related to this uncommon lesion.

Intra-articular knee arborescent lipoma: a case treated with arthroscopic synoviectomy.

Arborescent lipoma is an unusual intra-articular lesion that typically develops in the knee and has to be evoked before chronic effusion. It corresponds to hyperplasia of mature fatty tissue and hypertrophy of synovial villi, developing within a joint. The reference treatment is synovectomy by arthrotomy. The rare forms localized to the anterior compartment of the knee can benefit from an arthroscopic synovectomy. The authors report a case of arborescent knee lipoma in a 47-year-old patient who received arthroscopic synoviectomy. To our knowledge, only a few cases of arborescent lipoma treated by arthroscopic synoviectomy have been reported in the literature.