1991–1997: Formative years

Bilos, Roman, Cichoň (1995)

Malignant Tumour was formed in Ostrava at the end of 1991 by Martin "Bilos" Bílek and Roman Restel, at the ages of 15 and 14, respectively.^[2] When drummer Libor Šmakal joined in 1992, their style became influenced by the work of British grindcore band Carcass.^[3] In this lineup, they recorded their early demo tapes Cadaveric Incubator of Endo-Parasites (1993), Symphonies for Pathologist (1994), and Analyse of Pathological Conceptions (1995). In late 1995, Šmakal was replaced by Michal "Cichoň" Cichý, leading to Restel departing as well and being replaced by Otto Beran. The same year, Malignant Tumour released a split EP with Decomposed, titled Malignus Morbus. This was followed a year later by three more split EPs: Forensic Clinicism – The Sanguine Article with Immured, Sick Sinus Syndrome with Mastic Scum, and Swarming of Virulency with Ingrowing.

In 1997, the band released a compilation EP titled Hungry Urinary Urn, split with Negligent Collateral Collapse, C.S.S.O., and Catasexual Urge Motivation, as well as a split album with Squash Bowels, titled Eat the Flesh... and Vomica. Cichý and Beran left the band shortly after.

1997–2001: Equality!?

Kameň, Bilos, Marek (2000)

In 1997, Marek "Švejk" Pavlík was hired to play drums, just as Bilos took over bass duties—leading to Richard Chrobok coming onboard as the band's guitarist. Around this time, the theme of the band's lyrics changed from pathological topics to socially aware ones—opposing homophobia, inequality, racism, and slavery.^[4] Malignant Tumour went on to record the demo tape Killing for Profit in 1997 and the split EPs Rock Stars – Money Wars with Dead Infection and Murder for You to Eat with Vomito, in 1998. This was followed by another split album, Is This the Earth's Last Century?, with Alienation Mental, and their first solo EP, Equality!?, also in 1998. At the end of the year, drummer Švejk left the band and Cichoň returned.

Cichý was soon replaced by Michal "Kameň" Kaminsky, and Chrobok departed in mid-2000, being replaced by Marek Marunič. The band then recorded and released two split EPs: ...And Man Made the End with Agathocles and Get to Attack with Unholy Grave.

2001–2003: Relocation to the Netherlands and Dawn of the New Age

In 2001, Bilos relocated from Czechia to the Netherlands, where an entirely new lineup was formed, including brothers Johan and Jelle Smits on drums and bass, respectively. They released the split EP Oegstgeest Grindcore with Intumescence in 2002. A year later, they issued the double split EP In Oil We Trust with Critical Madness, Szargyerek, and Anubis, as well as their first full-length album, Dawn of the New Age. Bilos returned to Ostrava in mid-2003.

2003–2007: Burninhell

Malignant Tumour in 2007

Once back in Czechia, Malignant Tumour added Robert Šimek on bass and Martin "Marsel" Ondejka on drums. In 2004, they released the split EP Hammer and Anvil with Lycathrophy. Marsel died later that year and was replaced by David Ševčík. A year later, the band issued their second full-length album, Burninhell. It featured a guest appearance by guitarist Martin "Korál" Vyorálek, who later became a permanent member of the band. The record won second place in the Album of the Year category of that year's Břitva music poll.^[5] In 2006, they recorded their next split LP, titled R'n'R Engine, with Gurkha, which won third place in that year's Břitva music poll.^[6]

2007–2012: In Full Swing and Earthshaker

Korál, Šimek, Bilos, David (2010)

In 2008, Malignant Tumour released their next album, In Full Swing. It received praise from critics, some of whom compared the band to Motörhead.^[7] The record won the Břitva music polls for Album of the Year,^[8] and Malignant Tumour was named Live Band of the Year.^[9] The record was also nominated for Album of the Year at that year's Anděl Awards, in the Hard & Heavy category.^[10]

Two years later, the group went to work on a new record, with Andy Classen—the first time they had hired a professional producer. Earthshaker received praise from reviewers,^[11][12] won Album of the Year at the 2010 Anděl Awards in the Hard & Heavy category,^[13] and reached second place in the Břitva poll.^[14]

2012–present: Overdose & Overdrive and The Metallist

Šimek, Bohdič, Bilos, Korál (2013)

In December 2012, drummer David Ševčík left the band, and his place was taken by Petr "Bohdič" Bohda. In early 2013, Malignant Tumour entered the studio once more to record their next album, Overdose & Overdrive, again with Andy Classen as producer.^[15] The record came out in time for the band to go on tour that spring, including a stint at Neurotic Deathfest, in the Netherlands.^[16] Dutch death metal vocalist Martin van Drunen ranked Overdose & Overdrive as the best metal album of 2013.^[17]

Malignant Tumour issued their subsequent record, The Metallist, in 2016.^[18][19] This was followed the same year by The Way of Metallist 1991–2016, a DVD retrospective of the band's career to date.^[20] The film was submitted to the 2016 Czech Lion Awards.^[21]

Anděl Awards

Břitva Music Poll

Czech Lion Awards

Studio albums

Full

• Dawn of the New Age (2003)
• Burninhell (2005)
• In Full Swing (2008)
• Earthshaker (2010)
• Overdose & Overdrive (2013)
• The Metallist (2016)

Split

• Eat the Flesh... and Vomica – split with Squash Bowels (1997)
• Is This Earth's Last Century? – split with Alienation Mental (1998)
• R'n'R Engine – split with Gurkha (2006)

Other

• Four-way split with Agathocles / Abortion / Din-Addict (1998)
• Demos / Singles Collection '94–'98 (2002)
• Grinding Party – split with Pulmonary Fibrosis (2003)
• And Some Sick Parts Rotting Out There (compilation, 2010)

EPs

Full

• Equality!? (1998)
• We Are the Metal – limited edition issued with In Full Swing (2008)

Split

• Malignus Morbus – split with Decomposed (1995)
• Forensic Clinicism – The Sanguine Article – split with Immured (1996)
• Sick Sinus Syndrome – split with Mastic Scum (1996)
• Swarming of Virulency – split with Ingrowing (1996)
• Hungry Urinary URN – split with Negligent Collateral Collapse / C.S.S.O. / Catasexual Urge Motivation (1997)
• Rock Stars – Money Wars – split with Dead Infection (1998)
• Murder for You to Eat – split with Vomito (1998)
• ...And Man Made the End – split with Agathocles (2000)
• Get to Attack – split with Unholy Grave (2000)
• Oegstgeest Grindcore – split with Intumescence (2002)
• In Oil We Trust – split with Critical Madnes / Szargyerek / Anubis (2003)
• Hammer and Anvil – split with Lycanthrophy (2004)
• Nación de Metaleros – split with Acidez (2014)

Demos

• Cadaveric Incubator of Endo-Parasites (1993)
• Symphonies for Pathologist (1994)
• Analyse of Pathological Conceptions (1995)
• Killing for Profit (1997)