Six cases that changed the question

A teenager's eye disease looked inherited until the missing history was a handheld laser. 1 A tumor that began as a mature teratoma behaved like colorectal cancer. 2 A man treated for Behçet's disease turned out to have VEXAS syndrome, a late-recognized inflammatory disorder confirmed in this report by a somatic UBA1 mutation. 3 Six case reports from June 22–28, 2026, share one clinical move: the correct diagnosis changed the question the clinician was asking.

A young teenager intentionally exposed both eyes to a handheld laser beam and developed bilateral choroidal neovascular membranes, according to a June 26, 2026 BMJ Case Reports article by Nagesha CK, Jayadev C, and Gadde SGK from Narayana Nethralaya in Bangalore, India. 1

The first diagnosis went in the wrong direction. The bilateral maculopathy was initially mistaken for heredomacular dystrophy, an inherited retinal disorder, and the child was referred only after vision worsened. 1 Multimodal imaging then showed choroidal neovascular membranes in both eyes, and the history of intentional laser exposure reframed the case as laser burn maculopathy rather than hereditary disease. 1

The useful clinical detail is the mismatch between age, bilateral findings, and behavior. The authors warned that laser burn maculopathy from handheld laser devices is rising with recreational use, and they described pediatric patients as particularly vulnerable because the devices are broadly accessible and exposures may be intentional or accidental. 1 Anti-VEGF treatment resolved the lesions with substantial vision improvement, but the case turns on the history that was easy to miss. 1

A woman in her late 30s had a mature retroperitoneal teratoma, a tumor category that accounts for 5–15% of all teratomas, but the lesion underwent malignant transformation into colonic-type adenocarcinoma. 2 The June 26, 2026 BMJ Case Reports article by Jose A, Badami K, Veluswami S, and Raja A described the transformation as an entity with only about 15 reported cases worldwide. 2

The next turn made the report stranger: the authors identified it as the first documented case of ovarian metastasis from this entity. 2 The patient underwent surgical resection that included left nephrectomy and lymph node dissection, then received CAPEOX chemotherapy. 2 Six months later, ovarian metastasis developed despite adjuvant chemotherapy, requiring additional surgery; the patient was disease-free at 1-year follow-up. 2

The management problem is almost as important as the pathology. The authors said treatment has to be extrapolated from mucinous ovarian and colorectal cancer protocols because the condition is so uncommon, and they argued for long-term surveillance to detect recurrence or delayed metastasis. 2 In other words, the tumor did not fit neatly into the organ where it was found, the tissue type it imitated, or the recurrence pattern clinicians could rely on.

A man in his 50s was receiving immunomodulatory therapy for presumed Behçet's disease when he presented with odynophagia and jaw pain, according to a June 26, 2026 BMJ Case Reports article by Ziliotti R, Seitz L, Bonadies N, Banz Y, and Seitz P from Inselspital Bern, Switzerland. 3 Three months earlier, he had deep vein thrombosis and extensive superficial phlebitis with transmural inflammation. 3

The vascular pattern did not stay in one category. Imaging showed carotid artery vasculitis and unilateral temporal vessel inflammation, while ultrasound showed temporal vein wall thickening with normal temporal arteries. 3 That detail helped distinguish temporal phlebitis from giant cell arteritis, and bone marrow findings then revealed myelodysplastic syndrome. 3 A somatic UBA1 mutation confirmed VEXAS syndrome, and allogeneic hematopoietic stem cell transplantation led to clinical remission. 3

For readers who do not live in rheumatology clinic, the case's practical lesson is that the disease category changed only when clinicians connected vessels, marrow, and genetics rather than treating each episode as a separate inflammatory problem. The authors' practical point was narrower: VEXAS can affect arteries and veins even without thrombosis, and older men with cytopenia or myelodysplasia deserve a VEXAS differential when vasculitis crosses vascular categories. 3

The New England Journal of Medicine's June 18 Image Challenge was answered during this publication cycle: the diagnosis was kwashiorkor in a 5-month-old full-term baby boy brought to clinic with a 3-week rash. 4 The infant's weight-for-age z score was -3.4, length-for-age z score was -5.6, and serum albumin was 1.9 g/dL against a reference range of 3.5–5.0 g/dL. 4

The physical findings were the diagnosis. The baby was irritable, had sparse wispy hypopigmented hair, and had pitting edema of the arms and legs. 4 Hyperpigmented patches on the legs, arms, and trunk were desquamating, with hypopigmented skin underneath, the classic "flaking paint" dermatosis of kwashiorkor. 4 NEJM noted that kwashiorkor may be diagnosed in malnourished children by pitting edema, regardless of height and weight values. 4

The quiz results show how visually memorable and diagnostically treacherous the image was. Kwashiorkor was the correct choice for 41% of 19,458 respondents, while 23% chose staphylococcal scalded skin syndrome, 13% chose marasmus, 11% chose celiac disease, and 11% chose nephrotic syndrome. 4 The case also corrected a prior visual misread in the research record: the image showed generalized epidermal desquamation with erythematous lesions and perioral involvement, not an isolated heart-shaped chest lesion. 4

A woman in her 30s developed sudden bilateral vision loss, ocular pain, headache, nausea, and vomiting after taking topiramate for migraine prophylaxis for only 10 days. 5 Her intraocular pressure measured 59 mm Hg in the right eye and 55 mm Hg in the left eye, far above the stated normal range of 10–21 mm Hg. 5

The mechanism was not ordinary primary angle closure. The anterior chambers were shallow with appositional angle closure, anterior segment OCT confirmed closed angles, and ultrasound biomicroscopy showed ciliary body effusion. 5 Prompt systemic and topical steroids, cycloplegics, and mannitol improved the pressure within 6 hours, and vision fully recovered by day 3. 5

The trap was the drug clinicians often reach for in high-pressure eyes. Acetazolamide triggered a recurrence of elevated intraocular pressure and paradoxically worsened the topiramate-induced angle closure. 5 The authors' takeaway was specific: early systemic steroids can produce rapid anatomical and functional recovery, while acetazolamide can worsen angle closure in topiramate-induced cases. 5

A 47-year-old man with heart failure with reduced ejection fraction had an implantable cardioverter-defibrillator for primary prevention of sudden cardiac death, then presented with an unheralded syncopal event at work. 6 The June 20, 2026 NEJM Images in Clinical Medicine case by Michael Thomas Garcia and Alec Bijan Rezigh of Baylor College of Medicine described the event as captured by workplace video surveillance. 6

The image set joined two records that are rarely seen together: a surveillance still of the man at a counter and three ICD electrogram strips. 6

This case is less about a rare diagnosis than about rare documentation. The patient had no preceding symptoms, but the ICD tracing and the external video fixed the clinical timeline in a way a witness report could not. 6 For a primary-prevention device, the episode gives unusually concrete evidence of what prevention can look like: a collapse caught by a camera, an arrhythmia captured internally, and a patient whose presentation could be reconstructed rather than guessed. 6

The thread across these reports is practical rather than poetic. Ask about devices when retinal disease looks inherited. Treat a teratoma's histology and metastatic behavior as data, not a category error. Reopen vasculitis diagnoses when arteries, veins, marrow, and cytopenias point in the same direction. Each case shows a moment when the clue did not merely answer the original question; it made the original question too small.