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Photo Essay
The blisters/bullae contain clear fluid initially but may become hemorrhagic with time.
Photo Essay
An Atlas of Lumps and Bumps, Part 51: Diffuse Cutaneous Mastocytosis
06/23/2025
Alexander K.C. Leung, MD, MBBS, FRCPC, FRCP; Benjamin Barankin, MD, FRCPC; Joseph M. Lam, MD; Kin Fon Leong, MD
Diffuse cutaneous mastocytosis, a rare but potentially fatal form of cutaneous mastocytosis, accounts for approximately 1% to 5% of pediatric cutaneous mastocytosis cases
06/23/2025
Photo Essay
Figure 2
Photo Essay
An Atlas of Lumps and Bumps, Part 41: Congenital Melanocytic Nevi
05/19/2025
Alexander K.C. Leung, MD, MBBS, FRCPC, FRCP; Benjamin Barankin, MD, FRCPC; Joseph M. Lam, MD; Kin Fon Leong, MD
This article is part of a series describing and differentiating dermatologic lumps and bumps. In Part 41, Leung and colleagues describe congenital melanocytic nevi. To access previously published articles...
05/19/2025
What's Your Diagnosis?
What's Your Diagnosis?
What Is Causing Vomiting in a 5-Month-Old Infant?
05/12/2025
A 5-month-old infant was brought to the emergency department with vomiting and concerns for reflux. He was a full-term infant born by C-section due to failure to progress, with a birth weight of 3.3 kg. ...
05/12/2025
Radiology Quiz
Abdominal x-ray antero-posterior view.
Radiology Quiz
A Pediatric Patient With Abdominal Pain
05/04/2025
Ankuriti Singla, MBBS; Ananya Singla; Roli Agrawal, MD
A previously healthy 2-year-old girl presented to the pediatrician’s office with chief complaint of abdominal discomfort.
05/04/2025
Photo Essay
polymorphic maculopapular cutaneous mastocytosis
Photo Essay
An Atlas of Lumps and Bumps, Part 50: Maculopapular Cutaneous Mastocytosis
04/26/2025
Alexander K.C. Leung, MD, MBBS, FRCPC, FRCP; Benjamin Barankin, MD, FRCPC; Joseph M. Lam, MD; Kin Fon Leong, MD
Maculopapular cutaneous mastocytosis (also known as urticaria pigmentosa) is the most common form of cutaneous mastocytosis and accounts for 70% to 90% of pediatric cases. Its incidence has been estimated...
04/26/2025
Photo Essay
Photo Essay - Blue Nevus
Photo Essay
An Atlas of Lumps and Bumps, Part 43: Blue Nevi
04/12/2025
Alexander K.C. Leung, MD, MBBS, FRCPC, FRCP; Benjamin Barankin, MD, FRCPC; Joseph M. Lam, MD; Kin Fon Leong, MD
This article is part of a series describing and differentiating dermatologic lumps and bumps. In Part 43, Leung and colleagues describe blue nevi. To access previously published articles in the series,...
04/12/2025
Original Research
A sick child lying on his side
Original Research
Epidemiology and Management of Acute Hematogenous Vertebral Osteomyelitis and Discitis in Children
04/02/2025
Danielle Comeaux, MPAS, PA-C; Teena Hadvani, MD; Shelley Kumar, MSc, MS; Nicole Wunderlich, PA-C; Angela Foyt, PA-C; Megan James, BSN, RN, CPN; Ankhi Dutta, MD, MPH
Acute hematogenous vertebral osteomyelitis (AVOM) is a rare condition that causes significant morbidity in in the pediatric population owing to non-specific presentation and delayed diagnoses. The clinical...
04/02/2025
photo quiz
Figure 1
photo quiz
What Are These Multiple Brown Macules and Papules in an 11-Month-Old Boy?
03/22/2025
Michelle L. Gallagher, DO; Natalia Guerra, BS
An 11-month-old boy was brought into the clinic by his mother for evaluation of multiple widespread tan-brown macules and papules located on the infant’s back and chest.
03/22/2025
Photo Essay
solitary cutaneous mastocytoma
Photo Essay
An Atlas of Lumps and Bumps, Part 49: Solitary Cutaneous Mastocytoma
03/18/2025
Alexander K.C. Leung, MD, MBBS, FRCPC, FRCP; Benjamin Barankin, MD, FRCPC; Joseph M. Lam, MD; Kin Fon Leong, MD
Mastocytosis is a rare heterogenous group of disorders characterized by a clonal proliferation and accumulation of mast cells in one or more organs, mostly skin and bone marrow and, less frequently,...
03/18/2025
Photo Essay
In the pediatric age group, popliteal cysts are the most common lesion behind the knee
Photo Essay
An Atlas of Lumps and Bumps, Part 47: Popliteal Cyst
02/14/2025
Alexander K.C. Leung, MD, MBBS, FRCPC, FRCP; Benjamin Barankin, MD, FRCPC; Joseph M. Lam, MD; Kin Fon Leong, MD
A popliteal cyst, also known as a Baker cyst or parameniscal cyst, forms when the synovial fluid from the knee joint fills and distends a preexisting gastrocnemius-semimembranosus bursa in the popliteal...
02/14/2025