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Int Soc Dermpath

@IntSocDermpath

1st European Joint Meeting of the International Society of Dermatopathology #ISDP #dermatopathology Dr. Kempf on CD8 lymphoproliferative disorders

IntSocDermpath's tweet image. 1st European Joint Meeting of the International Society of Dermatopathology   #ISDP #dermatopathology Dr. Kempf on CD8 lymphoproliferative disorders

1st European Joint Meeting of the International Society of Dermatopathology program #ISDP #dermatopathology

IntSocDermpath's tweet image. 1st European Joint Meeting of the International Society of Dermatopathology  program #ISDP #dermatopathology

1st European Joint Meeting of the International Society of Dermatopathology an European Society of Pathology starts today in Vienna. First talk is by Dr. Fraitag #ISDP #dermatopathology

IntSocDermpath's tweet image. 1st European Joint Meeting of the International Society of Dermatopathology  an European Society of Pathology starts today in Vienna. First talk is by Dr. Fraitag #ISDP #dermatopathology

#ISDP #Olympics Spot diagnosis Case 20 - @JCandidoXavier CHROMOBLASTOMYCOSIS •Pigmented (dematiaceous) fungi •Prominent pseudoepitheliomatous hyperplasia •Granulomatous infiltrates with round brownish Medlar bodies resembling copper pennies or coffee beans #path #derm

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 20 - @JCandidoXavier 

CHROMOBLASTOMYCOSIS

•Pigmented (dematiaceous) fungi
•Prominent pseudoepitheliomatous hyperplasia
•Granulomatous infiltrates with round brownish Medlar bodies resembling copper pennies or coffee beans

#path  #derm

#ISDP #Olympics Spot diagnosis Case 19 - @JoyceSSLee SEBACEOUS CARCINOMA • Periocular (75%) • Basophilic germinative sebaceous cells • Sebocytes with vacuolated cytoplasm • Nuclear pleomorphism • Increased and atypical mitoses • Necrosis #Path #derm #pathology

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 19 -  @JoyceSSLee 

SEBACEOUS CARCINOMA

•  Periocular (75%)
• Basophilic germinative sebaceous cells
• Sebocytes with vacuolated cytoplasm
• Nuclear pleomorphism
• Increased and atypical mitoses
• Necrosis

#Path #derm #pathology
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 19 -  @JoyceSSLee 

SEBACEOUS CARCINOMA

•  Periocular (75%)
• Basophilic germinative sebaceous cells
• Sebocytes with vacuolated cytoplasm
• Nuclear pleomorphism
• Increased and atypical mitoses
• Necrosis

#Path #derm #pathology
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 19 -  @JoyceSSLee 

SEBACEOUS CARCINOMA

•  Periocular (75%)
• Basophilic germinative sebaceous cells
• Sebocytes with vacuolated cytoplasm
• Nuclear pleomorphism
• Increased and atypical mitoses
• Necrosis

#Path #derm #pathology
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 19 -  @JoyceSSLee 

SEBACEOUS CARCINOMA

•  Periocular (75%)
• Basophilic germinative sebaceous cells
• Sebocytes with vacuolated cytoplasm
• Nuclear pleomorphism
• Increased and atypical mitoses
• Necrosis

#Path #derm #pathology

#ISDP #OlympicGames Spot diagnosis Case 18 - @JCandidoXavier SYRINGOCYSTADENOMA PAPILLIFERUM •It can occur in naevus sebaceus of Jadassohn •Endophytic crateriform lesion •Two layers of cells forming papillary and cystic structures • Numerous plasma cells #path #derm

IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 18 - @JCandidoXavier 

SYRINGOCYSTADENOMA PAPILLIFERUM

•It can occur in naevus sebaceus of Jadassohn
•Endophytic crateriform lesion
•Two layers of cells forming papillary and cystic structures
• Numerous plasma cells

#path #derm
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 18 - @JCandidoXavier 

SYRINGOCYSTADENOMA PAPILLIFERUM

•It can occur in naevus sebaceus of Jadassohn
•Endophytic crateriform lesion
•Two layers of cells forming papillary and cystic structures
• Numerous plasma cells

#path #derm
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 18 - @JCandidoXavier 

SYRINGOCYSTADENOMA PAPILLIFERUM

•It can occur in naevus sebaceus of Jadassohn
•Endophytic crateriform lesion
•Two layers of cells forming papillary and cystic structures
• Numerous plasma cells

#path #derm

#ISDP #OlympicGames Spot diagnosis Case 17 - @JoyceSSLee CUTANEOUS ROSAI DORFMAN DISEASE •Non-Langerhans cell histiocytosis •Large histiocytes exhibiting emperipolesis (containing inflammatory cells) •CD68+, S100+, CD1a- •Lymphoplasmacytic infiltrate #Path #derm

IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 17 - @JoyceSSLee 

CUTANEOUS ROSAI DORFMAN DISEASE

•Non-Langerhans cell histiocytosis
•Large histiocytes exhibiting emperipolesis (containing inflammatory cells)
•CD68+, S100+, CD1a-
•Lymphoplasmacytic infiltrate

#Path #derm
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 17 - @JoyceSSLee 

CUTANEOUS ROSAI DORFMAN DISEASE

•Non-Langerhans cell histiocytosis
•Large histiocytes exhibiting emperipolesis (containing inflammatory cells)
•CD68+, S100+, CD1a-
•Lymphoplasmacytic infiltrate

#Path #derm
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 17 - @JoyceSSLee 

CUTANEOUS ROSAI DORFMAN DISEASE

•Non-Langerhans cell histiocytosis
•Large histiocytes exhibiting emperipolesis (containing inflammatory cells)
•CD68+, S100+, CD1a-
•Lymphoplasmacytic infiltrate

#Path #derm
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 17 - @JoyceSSLee 

CUTANEOUS ROSAI DORFMAN DISEASE

•Non-Langerhans cell histiocytosis
•Large histiocytes exhibiting emperipolesis (containing inflammatory cells)
•CD68+, S100+, CD1a-
•Lymphoplasmacytic infiltrate

#Path #derm

#ISDP #Olympics Spot diagnosis Case 16 - @JCandidoXavier ELASTOFIBROMA •Benign soft tissue tumor characterized by abnormal elastic fibres and fibroblasts •Hypocellular tumor with fragmented and thickened to globular elastic fibres #Pathology #path #dermatology #derm

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 16 -  @JCandidoXavier 

ELASTOFIBROMA

•Benign soft tissue tumor characterized by abnormal elastic fibres and fibroblasts
•Hypocellular tumor with fragmented and thickened to globular elastic fibres

#Pathology #path #dermatology #derm
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 16 -  @JCandidoXavier 

ELASTOFIBROMA

•Benign soft tissue tumor characterized by abnormal elastic fibres and fibroblasts
•Hypocellular tumor with fragmented and thickened to globular elastic fibres

#Pathology #path #dermatology #derm

#ISDP #OlympicGames Spot diagnosis Case 15 - @JoyceSSLee PLEVA: •Parakeratosis •Apoptotic keratinocytes •Basal vacuolar alteration •Dermal and intraepidermal hemorrhage •Wedge-shaped lymphohistiocytic infiltrate •+/- Lymphocytic vasculitis #derm #path #pathology

IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 15 -  @JoyceSSLee 

PLEVA:
•Parakeratosis
•Apoptotic keratinocytes 
•Basal vacuolar alteration
•Dermal and intraepidermal hemorrhage
•Wedge-shaped lymphohistiocytic infiltrate
•+/- Lymphocytic vasculitis

#derm #path #pathology
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 15 -  @JoyceSSLee 

PLEVA:
•Parakeratosis
•Apoptotic keratinocytes 
•Basal vacuolar alteration
•Dermal and intraepidermal hemorrhage
•Wedge-shaped lymphohistiocytic infiltrate
•+/- Lymphocytic vasculitis

#derm #path #pathology
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 15 -  @JoyceSSLee 

PLEVA:
•Parakeratosis
•Apoptotic keratinocytes 
•Basal vacuolar alteration
•Dermal and intraepidermal hemorrhage
•Wedge-shaped lymphohistiocytic infiltrate
•+/- Lymphocytic vasculitis

#derm #path #pathology
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 15 -  @JoyceSSLee 

PLEVA:
•Parakeratosis
•Apoptotic keratinocytes 
•Basal vacuolar alteration
•Dermal and intraepidermal hemorrhage
•Wedge-shaped lymphohistiocytic infiltrate
•+/- Lymphocytic vasculitis

#derm #path #pathology

#ISDP #OlympicGames Spot diagnosis Case 14 - @JCandidoXavier PARACOCCIDIOIDOMYCOSIS •Dimorphic fungi (mycelial in the environment and yeast in the host) •Granulomatous reaction pattern •Round yeast with single or multiple buds with narrow necks. #derm #path #pathology

IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 14 -  @JCandidoXavier 

PARACOCCIDIOIDOMYCOSIS

•Dimorphic fungi (mycelial in the environment and yeast in the host)
•Granulomatous reaction pattern
•Round yeast with single or multiple buds with narrow necks.

#derm #path #pathology

#ISDP #OlympicGames Spot diagnosis Case 13 - @JoyceSSLee ONYCHOMATRICOMA •Thickened nail plate •Wormwood-like or honeycomb-like cavities •Papillary digitate projections covered by matrix epithelium •V-shaped keratogenouszones •Fibrocellular stroma #path #dermatology

IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 13 -  @JoyceSSLee 

ONYCHOMATRICOMA

•Thickened nail plate
•Wormwood-like or honeycomb-like cavities
•Papillary digitate projections covered by matrix epithelium
•V-shaped keratogenouszones
•Fibrocellular stroma

#path #dermatology
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 13 -  @JoyceSSLee 

ONYCHOMATRICOMA

•Thickened nail plate
•Wormwood-like or honeycomb-like cavities
•Papillary digitate projections covered by matrix epithelium
•V-shaped keratogenouszones
•Fibrocellular stroma

#path #dermatology

#ISDP #OlympicGames Spot diagnosis Case 12 - @JCandidoXavier LANGERHANS CELL HISTIOCYTOSIS • Round/ovoid medium-sized cells with indented, lobulated or coffee-bean nuclei. • Abundant and eosinophilic cytoplasm •IHQ markers: CD1a, Langerin and S100 protein #derm #path

IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 12 -  @JCandidoXavier 

LANGERHANS CELL HISTIOCYTOSIS

• Round/ovoid medium-sized cells with indented, lobulated or coffee-bean nuclei.
• Abundant and eosinophilic cytoplasm 
•IHQ markers: CD1a, Langerin and S100 protein

#derm #path
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 12 -  @JCandidoXavier 

LANGERHANS CELL HISTIOCYTOSIS

• Round/ovoid medium-sized cells with indented, lobulated or coffee-bean nuclei.
• Abundant and eosinophilic cytoplasm 
•IHQ markers: CD1a, Langerin and S100 protein

#derm #path
IntSocDermpath's tweet image. #ISDP #OlympicGames 

Spot diagnosis

Case 12 -  @JCandidoXavier 

LANGERHANS CELL HISTIOCYTOSIS

• Round/ovoid medium-sized cells with indented, lobulated or coffee-bean nuclei.
• Abundant and eosinophilic cytoplasm 
•IHQ markers: CD1a, Langerin and S100 protein

#derm #path

Join us for three days in Queenstown, New Zealand for insightful discussions, engaging presentations, and networking opportunities with leading experts and professionals in the field of Dermatopathology. #ISDP #Dermpath #path #pathology @JMGardnerMD @GeronimoJrLapac

IntSocDermpath's tweet image. Join us for three days in Queenstown, New Zealand for insightful discussions, engaging presentations, and networking opportunities with leading experts and professionals in the field of Dermatopathology.

#ISDP #Dermpath #path #pathology 
@JMGardnerMD @GeronimoJrLapac

#ISDP #Olympics Spot diagnosis Case 11 - @JoyceSSLee NECROBIOTIC XANTHOGRANULOMA •Areas of necrobiosis •Xanthogranulomatousinflammation (foamy histiocytes, Touton giant cells) •Cholesterol clefts •Large, bizarre angulated giant cells with many nuclei #PathTwitter #derm

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 11 - @JoyceSSLee 

NECROBIOTIC XANTHOGRANULOMA

•Areas of necrobiosis
•Xanthogranulomatousinflammation (foamy histiocytes, Touton giant cells)
•Cholesterol clefts
•Large, bizarre angulated giant cells with many nuclei

#PathTwitter #derm
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 11 - @JoyceSSLee 

NECROBIOTIC XANTHOGRANULOMA

•Areas of necrobiosis
•Xanthogranulomatousinflammation (foamy histiocytes, Touton giant cells)
•Cholesterol clefts
•Large, bizarre angulated giant cells with many nuclei

#PathTwitter #derm
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 11 - @JoyceSSLee 

NECROBIOTIC XANTHOGRANULOMA

•Areas of necrobiosis
•Xanthogranulomatousinflammation (foamy histiocytes, Touton giant cells)
•Cholesterol clefts
•Large, bizarre angulated giant cells with many nuclei

#PathTwitter #derm

#ISDP #Olympics Spot diagnosis Case 10 - @JCandidoXavier PSEUDOXANTHOMA ELASTICUM • degenerative disease of elastic tissue • autosomal dominant • Elastic fibers are basophilic and irregular, appearing as widely dispersed granular material. #Path #dermpath #derm

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 10 - @JCandidoXavier 

PSEUDOXANTHOMA ELASTICUM

• degenerative disease of elastic tissue 
 • autosomal dominant 
• Elastic fibers are basophilic and irregular, appearing as widely dispersed granular material.

#Path #dermpath #derm
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 10 - @JCandidoXavier 

PSEUDOXANTHOMA ELASTICUM

• degenerative disease of elastic tissue 
 • autosomal dominant 
• Elastic fibers are basophilic and irregular, appearing as widely dispersed granular material.

#Path #dermpath #derm
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 10 - @JCandidoXavier 

PSEUDOXANTHOMA ELASTICUM

• degenerative disease of elastic tissue 
 • autosomal dominant 
• Elastic fibers are basophilic and irregular, appearing as widely dispersed granular material.

#Path #dermpath #derm

#ISDP #Olympics2024 Spot diagnosis Case 9 - @JoyceSSLee NECROTIZING INFUNDIBULAR CRYSTALLINE FOLLICULITIS •Folliculocentric crater •Eosinophilic filamentous material •Material likely derived from Malassezia yeasts, bacteria, and/or sebaceous lipids #path #dermatology

IntSocDermpath's tweet image. #ISDP #Olympics2024 

Spot diagnosis

Case 9 - @JoyceSSLee 

NECROTIZING INFUNDIBULAR CRYSTALLINE FOLLICULITIS

•Folliculocentric crater
•Eosinophilic filamentous material
•Material likely derived from Malassezia yeasts, bacteria, and/or sebaceous lipids

#path #dermatology
IntSocDermpath's tweet image. #ISDP #Olympics2024 

Spot diagnosis

Case 9 - @JoyceSSLee 

NECROTIZING INFUNDIBULAR CRYSTALLINE FOLLICULITIS

•Folliculocentric crater
•Eosinophilic filamentous material
•Material likely derived from Malassezia yeasts, bacteria, and/or sebaceous lipids

#path #dermatology

#ISDP #Olympics Spot diagnosis Case 8 - @JCandidoXavier OCHRONOSIS •Clinical presentation: blue–black cutaneous pigmentation •Typical swollen, irregular, golden brown banana 🍌shaped, sickled or round ochronotic bodies #dermpath #dermatology #pathology #path

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis  

Case 8 - @JCandidoXavier

OCHRONOSIS

•Clinical presentation: blue–black cutaneous pigmentation 

•Typical swollen, irregular, golden brown  banana 🍌shaped, sickled or round ochronotic bodies  

#dermpath #dermatology #pathology #path
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis  

Case 8 - @JCandidoXavier

OCHRONOSIS

•Clinical presentation: blue–black cutaneous pigmentation 

•Typical swollen, irregular, golden brown  banana 🍌shaped, sickled or round ochronotic bodies  

#dermpath #dermatology #pathology #path

#ISDP #Olympics Spot diagnosis Case 7 - @JoyceSSLee HAND, FOOT AND MOUTH DISEASE •Caused by coxsackievirus A16, enterovirus 71 •Intraepidermal blister •Ballooning and reticular degeneration •Epidermal necrosis •Neutrophils #Dermatology #derm #dempath #pathology

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 7 -  @JoyceSSLee 

HAND, FOOT AND MOUTH DISEASE

•Caused by coxsackievirus A16, enterovirus 71
•Intraepidermal blister
•Ballooning and reticular degeneration
•Epidermal necrosis
•Neutrophils

#Dermatology #derm #dempath #pathology
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 7 -  @JoyceSSLee 

HAND, FOOT AND MOUTH DISEASE

•Caused by coxsackievirus A16, enterovirus 71
•Intraepidermal blister
•Ballooning and reticular degeneration
•Epidermal necrosis
•Neutrophils

#Dermatology #derm #dempath #pathology
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis

Case 7 -  @JoyceSSLee 

HAND, FOOT AND MOUTH DISEASE

•Caused by coxsackievirus A16, enterovirus 71
•Intraepidermal blister
•Ballooning and reticular degeneration
•Epidermal necrosis
•Neutrophils

#Dermatology #derm #dempath #pathology

#ISDP #olympics Spot diagnosis Case 6 - @JCandidoXavier GRANULAR CELL TUMOR •Benign neuroectodermal tumor •Large cells with abundant and granular cytoplasm •Synonym: Abrikossoff tumor •Pseudoepitheliomatous hyperplasia can be prominent #path #pathology #dermatology

IntSocDermpath's tweet image. #ISDP #olympics

Spot diagnosis

Case 6 - @JCandidoXavier 

GRANULAR CELL TUMOR

•Benign neuroectodermal tumor
•Large cells with abundant and granular cytoplasm
•Synonym: Abrikossoff tumor
•Pseudoepitheliomatous hyperplasia can be prominent

#path #pathology #dermatology
IntSocDermpath's tweet image. #ISDP #olympics

Spot diagnosis

Case 6 - @JCandidoXavier 

GRANULAR CELL TUMOR

•Benign neuroectodermal tumor
•Large cells with abundant and granular cytoplasm
•Synonym: Abrikossoff tumor
•Pseudoepitheliomatous hyperplasia can be prominent

#path #pathology #dermatology

#ISDP #Olympics Spot diagnosis Case 5 - @JoyceSSLee SCLEROMYXEDEMA •Haphazard proliferation of fibroblasts within the reticular dermis •Fibrosis and skin thickening •Increased dermal mucin #dermatology #dermatopatology #dermapath #path

IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis 

Case 5 - @JoyceSSLee 

SCLEROMYXEDEMA

•Haphazard proliferation of fibroblasts within the reticular dermis
•Fibrosis and skin thickening
•Increased dermal mucin

#dermatology #dermatopatology #dermapath #path
IntSocDermpath's tweet image. #ISDP #Olympics 

Spot diagnosis 

Case 5 - @JoyceSSLee 

SCLEROMYXEDEMA

•Haphazard proliferation of fibroblasts within the reticular dermis
•Fibrosis and skin thickening
•Increased dermal mucin

#dermatology #dermatopatology #dermapath #path

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